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These adjectives mean feeling or showing no doubt. Sure and certain are frequently used interchangeably; sure, however, is the more subjective term, whereas certain may imply belief based on experience or evidence: "Never teach a child anything of which you are not yourself sure" (John Ruskin). "We went that early because we were certain it was the only way we would ever get a seat" (Ann Patchett).
Confident suggests assurance founded on faith or reliance in oneself or in others: "It goes without saying that a smiling, confident person will do better in an interview than a surly one" (Barbara Ehrenreich).
Positive suggests full, emphatic certainty: "We were young, and I was positive nothing really terrible could happen to us" (Nora Roberts). See Also Synonyms at certain.
adj. sur•er, sur•est,
If you are certain or sure about something, you have no doubts about it.
Don't say that it is 'sure' that something is true or will happen.
Instead of saying that it is certain that someone or something will do something, you can say that they are certain to do it or are sure to do it.
Instead of saying that it is certain that someone will be able to do something, you often say that they can be certain of doing it or can be sure of doing it.
Don't use words such as 'very' or 'extremely' in front of certain or sure. If you want to emphasize that someone has no doubts or that something is true, you use words such as absolutely and completely.
Sure is more common that 'certain' in negative structures.
|Adj.||1.||sure - having or feeling no doubt or uncertainty; confident and assured; "felt certain of success"; "was sure (or certain) she had seen it"; "was very sure in his beliefs"; "sure of her friends"|
|2.||sure - exercising or taking care great enough to bring assurance; "be certain to disconnect the iron when you are through"; "be sure to lock the doors"|
careful - exercising caution or showing care or attention; "they were careful when crossing the busy street"; "be careful to keep her shoes clean"; "did very careful research"; "careful art restorers"; "careful of the rights of others"; "careful about one's behavior"
|3.||sure - certain to occur; destined or inevitable; "he was certain to fail"; "his fate is certain"; "In this life nothing is certain but death and taxes"- Benjamin Franklin; "he faced certain death"; "sudden but sure regret"; "he is sure to win"|
predictable - capable of being foretold
|4.||sure - physically secure or dependable; "a sure footing"; "was on sure ground"|
secure - free from danger or risk; "secure from harm"; "his fortune was secure"; "made a secure place for himself in his field"
|5.||sure - reliable in operation or effect; "a quick and certain remedy"; "a sure way to distinguish the two"; "wood dust is a sure sign of termites"|
|6.||sure - (of persons) worthy of trust or confidence; "a sure (or trusted) friend"|
|7.||sure - infallible or unfailing; "a sure (or true) sign of one's commitment"|
true - consistent with fact or reality; not false; "the story is true"; "it is undesirable to believe a proposition when there is no ground whatever for supposing it true"- B. Russell; "the true meaning of the statement"
|8.||sure - certain not to fail; "a sure hand on the throttle"|
steady - not subject to change or variation especially in behavior; "a steady beat"; "a steady job"; "a steady breeze"; "a steady increase"; "a good steady ballplayer"
|9.||sure - impossible to doubt or dispute; "indisputable (or sure) proof"|
certain - established beyond doubt or question; definitely known; "what is certain is that every effect must have a cause"; "it is certain that they were on the bus"; "his fate is certain"; "the date for the invasion is certain"
|Adv.||1.||sure - definitely or positively (`sure' is sometimes used informally for `surely'); "the results are surely encouraging"; "she certainly is a hard worker"; "it's going to be a good day for sure"; "they are coming, for certain"; "they thought he had been killed sure enough"; "he'll win sure as shooting"; "they sure smell good"; "sure he'll come"|
colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
certain uncertain, doubtful, unsure, sceptical, uneasy, dubious, unconvinced, distrustful, unassured
inevitable unsure, touch-and-go
reliable unreliable, untrustworthy, undependable, vague, dubious, dodgy (Brit., Austral., & N.Z. informal), iffy (informal), fallible
sure[ʃʊəʳ] ADJ (surer (compar) (surest (superl)))
"do you want to see that film?" - "I'm not sure" → -¿quieres ver esa película? -no sé or no estoy seguro
she seemed honest enough but I had to be sure → parecía bastante sincera, pero tenía que asegurarme or estar seguro
"I know my duty" - "I'm sure you do" → -sé cuál es mi deber -de eso estoy seguro
to be sure that → estar seguro de que
I'm sure that she's right → estoy seguro de que tiene razón
I'm not sure that I can help you → no estoy seguro de que te pueda ayudar, no estoy seguro de poder ayudarte
are you sure you won't have another drink? → ¿seguro que no quieres tomarte otra copa?
I'm quite sure her decision was right → estoy convencido de que or estoy completamente seguro de que su decisión fue correcta
to be sure about sth → estar seguro de algo
I'm not sure about the date yet → todavía no estoy seguro de la fecha
I like the colour but I'm not sure about the shape → me gusta el color pero la forma no acaba de convencerme
to be sure what/who → estar seguro de qué/quién
Jane wasn't sure (in her mind) what she thought about abortion → Jane no tenía muy claras las ideas sobre el aborto
I'm not sure whether → no estoy seguro (de) si ...
to be sure of sth → estar seguro de algo
you can be sure of our support → puedes estar seguro de nuestro apoyo
Cameroon is sure of a place in the second round → Camerún tiene una plaza asegurada or segura en la segunda ronda
book now to be sure of a place on the course → haga la reserva ahora para tener la plaza en el curso asegurada or segura
we can't be sure of winning → no podemos estar seguros de que vayamos a ganar
to be sure of one's facts → estar seguro de lo que se dice
he was not quite sure of Flora → tenía sus dudas acerca de Flora
to be sure of o.s. → estar seguro de sí mismo
to be sure of sb → confiar en algn
she is sure to agree → seguro que está de acuerdo, seguramente estará de acuerdo
be sure to or be sure and close the window → asegúrate de que cierras la ventana
be sure to or be sure and tell me → que no se te olvide contármelo
be sure not to take any weapons → no se te ocurra ir armado
to make sure (that) → asegurarse (de que)
I knocked on his door to make sure that he was all right → llamé a su puerta para asegurarme de que estaba bien
make sure it doesn't happen again → asegúrate de que no vuelva a ocurrir
her friends made sure that she was never alone → sus amigos se encargaron de que no estuviera nunca sola
please make sure that your children get to school on time → consiga de la forma que sea que sus hijos lleguen a la escuela a tiempo
better get a ticket beforehand, just to make sure → mejor compre el billete de antemano, más que nada para ir sobre seguro or para tener esa seguridad
to make sure to do sth → asegurarse de hacer algo
one sure way to lose is → una forma segura de perder es ...
she had a sure grasp of the subject → tenía un gran dominio del tema
to do sth in the sure knowledge that → hacer algo sabiendo bien que or con la seguridad de que
it's a sure bet that he'll come → segurísimo que viene
for sure → seguro
you'll get it tomorrow for sure → lo recibirás mañana seguro
nobody or no one knows for sure → nadie lo sabe con seguridad
I can't say for sure → no puedo decirlo con seguridad
that's for sure; one thing's for sure → una cosa está clara
sure thing a month ago, a yes-vote seemed a sure thing → hace un mes, el voto a favor parecía algo seguro
he's a sure thing for president → no cabe la menor duda de que llegará a presidente (esp US) "I'd like to hire a car" - "sure thing" → -quiero alquilar un coche -sí, claro
"can I go with you?" - "sure thing" → -¿puedo ir contigo? -claro que sí or por supuesto
"did you like it?" - "sure thing" → -¿te ha gustado? -ya lo creo
this is a plausible interpretation, to be sure, but → desde luego que or claro que ésta es una interpretación muy verosímil pero ...
well, that's bad luck to be sure! → vaya, ¡eso sí que es tener mala suerte!
I sure am bored → no veas si estoy aburrido
"know what I mean?" - "sure do" → -sabes, ¿no? -claro que sí or claro que lo sé
(as) sure as I'm sure as hell not going to help him → yo sí que no le voy a ayudar
as sure as eggs is eggs, he did it → lo hizo él, como que me llamo Elena/Juan
"did you tell your uncle about her?" - "oh, sure" → -¿le hablaste a tu tío de ella? -¡claro! or (LAm) -¡cómo no!
"can I go with you?" - "sure" → -¿puedo ir contigo? -¡por supuesto! or -¡claro que sí!
"is that OK?" - "sure!" → -¿está bien así? -¡claro que sí! or (LAm) -¡cómo no!
Are you sure? → Tu es sûr?
How could he be so sure? → Comment pouvait-il en être si sûr?
I'm sure of it → j'en suis sûr
I'm not sure how ... → je ne sais pas très bien comment ...
I'm not sure why ... → je ne sais pas très bien pourquoi ...
I'm not sure when ... → je ne sais pas très bien quand ...
to make sure (that) ... → s'assurer que ...
I'm going to make sure the door's locked → Je vais m'assurer que la porte est fermée à clé.
to make sure of sth [+ facts, victory, success] → s'assurer de qch
one thing's for sure ... → une chose est sûre ...
I don't know for sure → je n'en suis pas sûr
a sure sign of sth → un signe indubitable de qch
to be a sure sign of sth → être un signe indubitable de qch, signaler à coup sûr qch
Wood dust beneath a piece of furniture is a sure sign of woodworm → De la poussière de bois sous un meuble est un signe indubitable de la présence de vers., De la poussière de bois sous un meuble signale à coup sûr la présence de vers.
sure thing! (mainly US) → c'est sûr!
That sure is pretty → C'est drôlement joli.
It sure looks that way → Cela y ressemble drôlement.
it's sure to rain → pioverà di sicuro
I'm sure it's going to rain → sono sicuro che pioverà
I'm not sure how/why/when → non so bene come/perché/quando + sub
be sure to tell me if you see him → mi raccomando, dimmi se lo vedi
to be sure of sth → essere sicuro/a di qc
to be sure of o.s. → essere sicuro/a di sé
to be sure of one's facts → essere sicuro/a dei fatti
you can be sure of a good time there → puoi essere sicuro che ti divertirai
to make sure of sth → assicurarsi di qc
be or make sure you do it right → bada di farlo bene
I'll find out for sure → vedrò di accertarmene
I think I locked up, but I'll just make sure → credo di aver chiuso a chiave, ma voglio assicurarmene
just to make sure → per sicurezza
do you know for sure? → ne sei proprio sicuro?
she'll leave, for sure → senza dubbio partirà
I'm sure I don't know, I don't know, I'm sure → che vuoi che ne sappia io?
he's a sure thing for president → ha la presidenza assicurata
that sure is pretty, that's sure pretty (Am) → è veramente or davvero carino
sure enough! (of course) → sicuro!, senz'altro!
sure enough (predictably) → infatti
as sure as fate → ovviamente
as sure as eggs is eggs, as sure as I'm standing here → e com'è vero Dio