ef·fec·tive ( -f k t v)adj.1. a. Having an intended or expected effect. b. Producing a strong impression or response; striking: gave an effective performance as Othello. 2. Operative; in effect: The law is effective immediately. 3. Existing in fact; actual: a decline in the effective demand. 4. Prepared for use or action, especially in warfare. n. A soldier or a piece of military equipment that is ready for combat: "The 'company' was no more than two platoons of effectives" Tom Clancy.
Synonyms: effective, effectual, efficacious, efficient These adjectives mean producing or capable of producing a desired effect: an effective reprimand; an effectual complaint; an efficacious remedy; the efficient cause of the revolution. |
effective Adjective 1. producing a desired result: an effective vaccine against HIV 2. officially coming into operation: the new rates become effective at the end of May 3. impressive: a highly effective speech 4. in reality, although not officially or in theory: he is in effective control of the company effectively adv effectiveness n
ThesaurusLegend: Synonyms Related Words Antonyms | Adj. | 1. | effective - producing or capable of producing an intended result or having a striking effect; "an air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation"-LewisMumford; "effective teaching methods"; "effective steps toward peace"; "made an effective entrance"; "his complaint proved to be effectual in bringing action"; "an efficacious law"efficacious - marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough" efficient - being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas" potent, stiff, strong - having a strong physiological or chemical effect; "a potent toxin"; "potent liquor"; "a potent cup of tea", "a stiff drink" powerful - having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument" useful, utile - being of use or service; "the girl felt motherly and useful"; "a useful job"; "a useful member of society" | | 2. | effective - able to accomplish a purpose; functioning effectively; "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."-G.B.Shaw; "effective personnel"; "an efficient secretary"; "the efficient cause of the revolution"competent - properly or sufficiently qualified or capable or efficient; "a competent typist" | | 3. | effective - works well as a means or remedy; "an effective reprimand"; "a lotion that is effective in cases of prickly heat"efficacious - marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough" | | 4. | effective - exerting force or influence; "the law is effective immediately"; "a warranty good for two years"; "the law is already in effect (or in force)"operative - being in force or having or exerting force; "operative regulations"; "the major tendencies operative in the American political system" | | 5. | effective - existing in fact; not theoretical; real; "a decline in the effective demand"; "confused increased equipment and expenditure with the quantity of effective work done"actual, existent - presently existing in fact and not merely potential or possible; "the predicted temperature and the actual temperature were markedly different"; "actual and imagined conditions" | | 6. | effective - ready for service; "the fort was held by about 100 effective soldiers"operational - (military) of or intended for or involved in military operations |
effective adjective 1. efficient, successful, useful, active, capable, valuable, helpful, adequate, productive, operative, competent, serviceable, efficacious, effectual << OPPOSITE ineffective adjective 2. powerful, strong, convincing, persuasive, telling, impressive, compelling, potent, forceful, striking, emphatic, weighty, forcible, cogent << OPPOSITE weak adjective 4. in operation, official, current, legal, real, active, actual, in effect, valid, operative, in force, in execution << OPPOSITE inoperative
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