o·pen (  p n)adj.1. a. Affording unobstructed entrance and exit; not shut or closed. b. Affording unobstructed passage or view: open waters; the open countryside. 2. a. Having no protecting or concealing cover: an open wound; an open sports car. b. Completely obvious; blatant: open disregard of the law. c. Carried on in full view: open warfare; open family strife. d. Sports Not closely defended by an opponent: an open receiver. 3. a. Not sealed or tied: an open package. b. Spread out; unfolded: an open book. 4. Having interspersed gaps, spaces, or intervals: open ranks; an open weave. 5. a. Accessible to all; unrestricted as to participants: an open competition. b. Free from limitations, boundaries, or restrictions: open registration. c. Enterable by registered voters regardless of political affiliation: an open primary. d. Computer Science Of or relating to a file that can be accessed. 6. a. Lacking effective regulation: an open town in which gambling predominated. b. Not legally repressed: open drug trafficking. 7. a. Susceptible; vulnerable: open to interpretation; an issue that is open to question. b. Willing to consider or deal with something: open to suggestions. 8. a. Available; obtainable: The job is still open. b. Available for use: an open account; the only course open to us. 9. Ready to transact business: The store is open. 10. Not engaged or filled: has an open hour for emergency cases. 11. Not yet decided; subject to further thought: an open question. 12. a. Characterized by lack of pretense or reserve; candid: Please be open with me. See Synonyms at frank1. b. Free of prejudice; receptive to new ideas and arguments: She listened to the proposal with an open mind. c. Generous: He is very open with his time. 13. Printing a. Widely spaced or leaded. Used of typeset or other printed matter. b. Having constituent elements separated by a space in writing or printing: The word sea horse is an open compound. 14. Music a. Not stopped by a finger. Used of a string or hole of an instrument. b. Produced by an unstopped string or hole or without the use of slides, valves, or keys: an open note on a trumpet. c. Played without a mute: an open wind instrument. 15. Linguistics a. Articulated with the tongue in a low position, as the vowel in far. b. Ending in a vowel or diphthong: an open syllable. 16. Designating a method of punctuation in which commas and other marks are used sparingly. 17. Being in operation; live: an open microphone. 18. New England Clear. Used of weather. See Regional Note at fair1. 19. Electricity Containing a gap across which electricity cannot pass: an open circuit. 20. Mathematics a. Of or relating to an interval containing neither of its endpoints. b. Of or being a set such that at least one neighborhood of every point in the set is within the set. c. Of or being a set that is the complement of a closed set. 21. Sports a. Having the forward foot farther from the intended point of impact with the ball than the rear foot: an open batting stance. b. Held or swung with the top or outer edge of the striking face pointing slightly farther away from the objective than the lower or inner edge: The club struck the ball with an open face, causing a slice. v. o·pened, o·pen·ing, o·pens v.tr.1. To release from a closed or fastened position. 2. To remove obstructions from; clear. 3. To make or force an opening in: open an old wound. 4. a. To form spaces or gaps between: soldiers opening ranks. b. To break the continuity of; make a gap in: open a circuit. 5. a. To remove the cover, cork, or lid from. b. To remove the wrapping from; undo. 6. To unfold so that the inner parts are displayed; spread out: open a newspaper. 7. a. To get (something) going; initiate: open a campaign. b. To commence the operation of: open a new business. 8. Games To begin (the action in a game of cards) by making the first bid, placing the first bet, or playing the first lead. 9. To make available for use: opened the area to commercial development; opened the computer file and retrieved some data. 10. To make more responsive or understanding. 11. To reveal the secrets of; bare. 12. Sports To modify (one's stance), as in baseball or golf, so that it is open. 13. Law To recall (an order or judgment) for a reexamination of its merits. v.intr.1. To become open: The door opened slowly. 2. To draw apart; separate: The wound opened under pressure. 3. To spread apart; unfold. 4. To come into view; become revealed: The plain opened before us. 5. To become receptive or understanding. 6. a. To begin; commence: The meeting opened with a call to order. b. To begin business or operation: The store opens early on Saturday. 7. To be performed, shown, or made available to the public for the first time: The play opens next week. 8. To be priced or listed at a specified amount when trading begins: Shares opened high and fell sharply. 9. Games To make a bid, bet, or lead in starting a game of cards. 10. To give access: The room opens onto a terrace. n.1. An unobstructed area of land or water. 2. The outdoors: camping in the open. 3. An undisguised or unconcealed state: brought the problem out into the open. 4. A tournament or contest in which both professional and amateur players may participate. Phrasal Verb: open up1. To spread out; unfold: A green valley opened up before us. 2. a. To begin operation: The new store opens up next month. b. To begin firing: The artillery opened up at dawn. 3. Informal To speak freely and candidly: At last the frightened witness opened up and told the truth. 4. To make an opening in by cutting: The surgeon opened up the patient's chest. 5. To make available or accessible: open up new markets. 6. Informal To accelerate. Used of a motor vehicle. Idioms: open fire To begin firing on. open (one's) eyes To become aware of the truth of a situation.
[Middle English, from Old English; see upo in Indo-European roots.]
open·ly adv. open·ness n. |
open Adjective 1. not closed, fastened, or blocked up: the doctor's office was open 2. not enclosed, covered, or wrapped: the parcel was open 3. extended, expanded, or unfolded: an open flower 4. ready for business: some of the crafts rooms and photography shops are open all night 5. (of a job) available: all the positions on the council should be open to females 6. unobstructed by buildings or trees: we lived in a small market town surrounded by open countryside 7. free to all to join in, enter, or use: there was an open competition and I was appointed 8. (of a season or period) not restricted for purposes of hunting game of various kinds 9. not decided or finalized: the legality of these sales is still an open question 10. ready to consider new ideas: I was able to approach their problem with an open mind 11. honest and frank 12. generous: she has given me love and the open hand 13. exposed to view; blatant: there has never been such sustained and open criticism of the President 14. unprotected; susceptible: a change of policy which would leave vulnerable youths open to exploitation 15. having spaces or gaps: open ranks, an open texture 16. Computers designed to an internationally agreed standard to allow communication between computers irrespective of size or manufacturer 17. Music a. (of a string) not stopped with the finger b. (of a note) played on such a string 18. Sport (of a goal or court) unguarded or relatively unprotected 19. (of a wound) exposed to the air Verb 1. to make or become open: it was easy to open the back door and to slip noiselessly outside, she knelt and tried to open the drawer 2. to set or be set in action; start: the US will have to open talks on Palestinian rights, I want to open a dress shop 3. to arrange for (a bank account), usually by making an initial deposit 4. to declare open ceremonially or officially Noun 1. the open any wide or unobstructed area 2. Sport a competition which anyone may enter [Old English] opener n
openly adv
openness n
ThesaurusLegend: Synonyms Related Words Antonyms | Noun | 1. |  open - a clear or unobstructed space or expanse of land or water; "finally broke out of the forest into the open"area, country - a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography); "it was a mountainous area"; "Bible country" | | 2. |  open - where the air is unconfined; "he wanted to get outdoors a little"; "the concert was held in the open air"; "camping in the open" | | 3. | open - a tournament in which both professionals and amateurs may playtournament, tourney - a sporting competition in which contestants play a series of games to decide the winner | | 4. | open - information that has become public; "all the reports were out in the open"; "the facts had been brought to the surface" | | Verb | 1. | open - cause to open or to become open; "Mary opened the car door"unbar - remove a bar from (a door) break open - open with force; "He broke open the picnic basket" click open - open with a clicking sound; "These keys have clicked open many doors" reopen - open again or anew; "They reopened the theater" unlock - open the lock of; "unlock the door" unbolt - undo the bolt of; "unbolt the door" unseal - break the seal of; "He unsealed the letter" uncork - draw the cork from (bottles); "uncork the French wine" jimmy, lever, prise, pry, prize - to move or force, especially in an effort to get something open; "The burglar jimmied the lock": "Raccoons managed to pry the lid off the garbage pail" lance - open by piercing with a lancet; "lance a boil" close, shut - move so that an opening or passage is obstructed; make shut; "Close the door"; "shut the window" | | 2. | open - start to operate or function or cause to start operating or functioning; "open a business"close down, close up, shut down, close, fold - cease to operate or cause to cease operating; "The owners decided to move and to close the factory"; "My business closes every night at 8 P.M."; "close up the shop" | | 3. | open - become open; "The door opened"change state, turn - undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election" unfasten - become undone or untied; "The shoelaces unfastened" fly open - come open suddenly; "the doors flew open in the strong gust" close, shut - become closed; "The windows closed with a loud bang" | | 4. | open - begin or set in action, of meetings, speeches, recitals, etc.; "He opened the meeting with a long speech"embark on, start up, commence, start - get off the ground; "Who started this company?"; "We embarked on an exciting enterprise"; "I start my day with a good breakfast"; "We began the new semester"; "The afternoon session begins at 4 PM"; "The blood shed started when the partisans launched a surprise attack" inaugurate - open ceremoniously or dedicate formally call to order - open formally; "the chairman called the meeting to order by pounding his gavel" pioneer, open up - open up an area or prepare a way; "She pioneered a graduate program for women students" close - finish or terminate (meetings, speeches, etc.); "The meeting was closed with a charge by the chairman of the board" | | 5. |  open - spread out or open from a closed or folded state; "open the map"; "spread your arms"undo - cancel, annul, or reverse an action or its effect; "I wish I could undo my actions" divaricate - spread apart; "divaricate one's fingers" grass - spread out clothes on the grass to let it dry and bleach butterfly - cut and spread open, as in preparation for cooking; "butterflied shrimp" uncross - change from a crossed to an uncrossed position; "She uncrossed her legs" splay - spread open or apart; "He splayed his huge hands over the table" | | 6. | open - make available; "This opens up new possibilities"yield, afford, give - be the cause or source of; "He gave me a lot of trouble"; "Our meeting afforded much interesting information" | | 7. | open - become available; "an opportunity opened up"come up, arise - result or issue; "A slight unpleasantness arose from this discussion" | | 8. | open - have an opening or passage or outlet; "The bedrooms open into the hall" | | 9. | open - make the opening move; "Kasparov opened with a standard opening"chess game, chess - a board game for two players who move their 16 pieces according to specific rules; the object is to checkmate the opponent's king move, go - have a turn; make one's move in a game; "Can I go now?" | | 10. | open - afford access to; "the door opens to the patio"; "The French doors give onto a terrace" | | 11. | open - display the contents of a file or start an application as on a computerdisplay, exhibit, expose - to show, make visible or apparent; "The Metropolitan Museum is exhibiting Goya's works this month"; "Why don't you show your nice legs and wear shorter skirts?"; "National leaders will have to display the highest skills of statesmanship" close - cause a window or an application to disappear on a computer desktop | | Adj. | 1. |  open - affording unobstructed entrance and exit; not shut or closed; "an open door"; "they left the door open"open - affording free passage or access; "open drains"; "the road is open to traffic"; "open ranks" | | 2. | open - affording free passage or access; "open drains"; "the road is open to traffic"; "open ranks"open, unfastened - affording unobstructed entrance and exit; not shut or closed; "an open door"; "they left the door open" unsealed - not closed or secured with or as if with a seal; "unsealed goods"; "the letter arrived unsealed" closed - not open or affording passage or access; "the many closed streets made travel difficult"; "our neighbors peeped from behind closed curtains" | | 3. | open - with no protection or shield; "the exposed northeast frontier"; "open to the weather"; "an open wound" | | 4. | open - open to or in view of all; "an open protest"; "an open letter to the editor"public - not private; open to or concerning the people as a whole; "the public good"; "public libraries"; "public funds"; "public parks"; "a public scandal"; "public gardens"; "performers and members of royal families are public figures" | | 5. | open - used of mouth or eyes; "keep your eyes open"; "his mouth slightly opened"shut, closed - used especially of mouth or eyes; "he sat quietly with closed eyes"; "his eyes were shut against the sunlight" | | 6. | open - not having been filled; "the job is still open"available - obtainable or accessible and ready for use or service; "kept a fire extinguisher available"; "much information is available through computers"; "available in many colors"; "the list of available candidates is unusually long" | | 7. | open - accessible to all; "open season"; "an open economy" | | 8. |  open - not defended or capable of being defended; "an open city"; "open to attack"vulnerable - susceptible to attack; "a vulnerable bridge" | | 9. | open - (of textures) full of small openings or gaps; "an open texture"; "a loose weave"coarse, harsh - of textures that are rough to the touch or substances consisting of relatively large particles; "coarse meal"; "coarse sand"; "a coarse weave" | | 10. | open - having no protecting cover or enclosure; "an open boat"; "an open fire"; "open sports cars"unenclosed - not closed in our surrounded or included; "an unenclosed porch"; "unenclosed common land" | | 11. | open - (set theory) of an interval that contains neither of its endpointsmath, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement closed - (set theory) of an interval that contains both its endpoints | | 12. |  open - not brought to a conclusion; subject to further thought; "an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined"unsettled - still in doubt; "an unsettled issue"; "an unsettled state of mind" | | 13. | open - not sealed or having been unsealed; "the letter was already open"; "the opened package lay on the table"unsealed - not closed or secured with or as if with a seal; "unsealed goods"; "the letter arrived unsealed" | | 14. | open - without undue constriction as from e.g. tenseness or inhibition; "the clarity and resonance of an open tone"; "her natural and open response"unconstricted - not constricted physically or by extension psychologically; "healthy unconstricted arteries" | | 15. | open - ready or willing to receive favorably; "receptive to the proposals" | | 16. | open - open and observable; not secret or hidden; "an overt lie"; "overt hostility"; "overt intelligence gathering"; "open ballots"explicit, expressed - precisely and clearly expressed or readily observable; leaving nothing to implication; "explicit instructions"; "she made her wishes explicit"; "explicit sexual scenes" public - not private; open to or concerning the people as a whole; "the public good"; "public libraries"; "public funds"; "public parks"; "a public scandal"; "public gardens"; "performers and members of royal families are public figures" unconcealed - not concealed or hidden; "her unconcealed hostility poisoned the atmosphere"; "watched with unconcealed curiosity" | | 17. | open - not requiring union membership; "an open shop employs nonunion workers"nonunion - not belonging to or not allowing affiliation with a trade union; "nonunion carpenters"; "a nonunion contractor" | | 18. | open - possibly accepting or permitting; "a passage capable of misinterpretation"; "open to interpretation"; "an issue open to question"; "the time is fixed by the director and players and therefore subject to much variation"susceptible - (often followed by `of' or `to') yielding readily to or capable of; "susceptible to colds"; "susceptible of proof" | | 19. | open - affording free passage or view; "a clear view"; "a clear path to victory"; "open waters"; "the open countryside"unobstructed - free from impediment or obstruction or hindrance; "an unobstructed view" | | 20. | open - openly straightforward and direct without reserve or secretiveness; "his candid eyes"; "an open and trusting nature"; "a heart-to-heart talk"artless, ingenuous - characterized by an inability to mask your feelings; not devious; "an ingenuous admission of responsibility" | | 21. | open - ready for business; "the stores are open"active - full of activity or engaged in continuous activity; "an active seaport"; "an active bond market"; "an active account" |
open adjective 1. unclosed, unlocked, ajar, unfastened, yawning, gaping, unlatched, unbolted, partly open, unbarred, off the latch << OPPOSITE closed adjective 2. unsealed, unstoppered << OPPOSITE unopened adjective 4. frank, direct, natural, plain, innocent, straightforward, sincere, transparent, honest, candid, truthful, upfront ( informal) plain-spoken, above board, unreserved, artless, ingenuous, guileless, straight from the shoulder ( informal) << OPPOSITE sly adjective 5. obvious, clear, frank, plain, apparent, visible, patent, evident, distinct, pronounced, manifest, transparent, noticeable, blatant, conspicuous, downright, overt, unmistakable, palpable, recognizable, avowed, flagrant, perceptible, much in evidence, undisguised, unsubtle, barefaced, unconcealed << OPPOSITE hidden adjective 7. susceptible, subject, exposed, vulnerable, in danger, disposed, liable, wide open, unprotected, at the mercy of, left open, laid bare, an easy target for, undefended, laid open, defenceless against, unfortified << OPPOSITE defended adjective 10. unenclosed, wide, rolling, sweeping, exposed, extensive, bare, spacious, wide-open, undeveloped, uncrowded, unfenced, not built-up, unsheltered << OPPOSITE enclosed 13. general, public, free, catholic, broad, universal, blanket, unconditional, across-the-board, unqualified, all-inclusive, unrestricted, overarching, free to all, nondiscriminatory, one-size-fits-all << OPPOSITE restricted adjective 15. generous, kind, liberal, charitable, benevolent, prodigal, bountiful, open-handed, unstinting, beneficent, bounteous, munificent, ungrudging verb 23. begin business, verb 24. start, begin, launch, trigger, kick off ( informal) initiate, commence, get going, instigate, kick-start, inaugurate, set in motion, get (something) off the ground ( informal) enter upon << OPPOSITE end  Translations open [ˈəupn] adj → abierto; [ car] → descubierto; [ road, view] → despejado; [ meeting] → público; [ admiration] → manifiestovi [ flower, eyes, door, debate] → abrirse; [ book etc] (= commence); comenzar; open ground ( among trees) → claro (= waste ground); solar m; to have an open mind (on sth) → estar sin decidirse aún (sobre algo); open on to vt fus [ room, door] → dar a vi [person] → abrirse vi → abrirse
 open [ˈəupn] adj → ouvert(e); [ car] → découvert(e); [ road, view] → dégagé(e); [ meeting] → public/ique; [ admiration] → manifeste; [ question] → non résolu(e); [ enemy] → déclaré(e)what time do you open? → à quelle heure ouvrez-vous?;
 open [ˈəupn] adj → offen; [ packet, shop, museum] → geöffnet; [ view] → frei; [ meeting, debate] → öffentlich; [ ticket, return] → unbeschränkt; [ vacancy] → verfügbarin the open (air) → im Freien; open on to open vt fus [ room, door] → führen auf +acc
 open [ˈəupn] adj → aperto/a; [ road] → libero/a; [ meeting] → pubblico/a; [ admiration] → evidente, franco/a; [ question] → insoluto/a; [ enemy] → dichiarato/aopen on to vt fus [ room, door] → dare su vi → aprirsi open up vt → aprire [+ blocked road]; sgombrare vi → aprirsi
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