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These adjectives mean impossible to avoid or evade: soldiers who knew they faced certain death; facts that led to an inescapable conclusion; an inevitable result; sudden but sure retribution; an unavoidable accident. See Also Synonyms at sure.
If you are certain or sure about something, you have no doubts about it.
If it is certain that something is true, it is definitely true. If it is certain that something will happen, it will definitely happen.
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.||certain - definite but not specified or identified; "set aside a certain sum each week"; "to a certain degree"; "certain breeds do not make good pets"; "certain members have not paid their dues"; "a certain popular teacher"; "a certain Mrs. Jones"|
definite - precise; explicit and clearly defined; "I want a definite answer"; "a definite statement of the terms of the will"; "a definite amount"; "definite restrictions on the sale of alcohol"; "the wedding date is now definite"; "a definite drop in attendance"
|2.||certain - 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"|
|3.||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"|
uncertain - not established beyond doubt; still undecided or unknown; "an uncertain future"; "a manuscript of uncertain origin"; "plans are still uncertain"; "changes of great if uncertain consequences"; "without further evidence his story must remain uncertain"
|4.||certain - 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
uncertain - not certain to occur; not inevitable; "everything is uncertain about the army"; "the issue is uncertain"
|5.||certain - established irrevocably; "his fate is sealed"|
|6.||certain - 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"|
|7.||certain - 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"
sure uncertain, doubtful, dubious, unsure, undecided, unconvinced
known uncertain, doubtful, dubious, unsure, questionable, unreliable, disputable
fixed unsettled, indefinite
I'm certain he's hiding something → estoy seguro de que está ocultando algo
to be certain about sth → estar seguro de algo
to feel certain → estar seguro
to be certain of sth → estar seguro de algo
I am certain of it → estoy seguro de ello
you don't sound very certain → no pareces estar muy seguro
for certain I can't say for certain → no puedo decirlo con seguridad or a ciencia cierta
we don't know for certain what caused the accident → no sabemos con seguridad or a ciencia cierta lo que causó el accidente
he's up to something, that's for certain → trama algo, de eso no hay duda or eso es seguro
to make certain of sth → asegurarse de algo
you should make certain of your facts → debes asegurarte de que los datos son ciertos
to make certain that → asegurarse de que
I wanted to make absolutely certain that this was the right number → quería asegurarme del todo de que este número era el correcto
I made certain that he kept his promise → me aseguré de que cumpliese su promesa
one thing is certain → una cosa es segura ...
it is certain that → es seguro que ...
it's almost certain that her husband is dead → es casi seguro que or se tiene la casi completa seguridad de que su marido está muerto
the hospital is facing almost certain closure → el hospital se enfrenta al cierre casi inevitable
it is far from certain that they can win this election → no es ni mucho menos seguro or no está nada claro que puedan ganar estas elecciones
he has been there four times to my certain knowledge → me consta que or sé con certeza que ha estado allí cuatro veces
in the certain knowledge that → con la seguridad or certeza de que ...
nothing's certain in this world → no hay nada seguro en este mundo
he is certain to be there → (es) seguro que estará allí
there's certain to be an argument → con seguridad se producirá una discusión; (less formal) → seguro que habrá una discusión
there's certain to be strong opposition to these proposals → está garantizado que estas propuestas se enfrentarán a una fuerte oposición
the plans are almost certain to go ahead → los planes se llevarán a cabo casi con toda seguridad
on a certain day in May → cierto día de mayo
a certain Mr/Mrs Smith → un tal Señor/una tal Señora Smith
of a certain age → de cierta edad
in certain circumstances → en ciertas or determinadas circunstancias
a certain number of people/years → un cierto número de personas/años
a certain person told me that → cierta persona me dijo que ...
she has a certain something → tiene algo or un no sé qué
at certain times of the day/month/year → en ciertos momentos del día/ciertos días del mes/ciertas épocas del año
I'm absolutely certain it was him → Je suis absolument certain que c'était lui.
to be certain of sth → être certain(e) de qch
to know for certain → savoir à coup sûr
I don't know for certain → Je n'en suis pas certain.
to feel certain that → être certain que
to make certain that → s'assurer que
I made certain the door was locked → Je me suis assuré que la porte était fermée à clé.
to make certain of → s'assurer de
he's certain to leave his job → è certo che lui lascerà il lavoro
it is certain that ... → è certo che...
I am certain of it → ne sono certo
he is certain to be there → lui ci sarà certamente
for certain → per certo, di sicuro
I can't say for certain that ... → non posso dire con certezza che...
be certain to tell her → ricordati or non dimenticarti di dirglielo
to make certain of sth → accertarsi di qc