What is another word for certain?

Synonyms for certain
ˈsɜr tncer·tain

This thesaurus page includes all potential synonyms, words with the same meaning and similar terms for the word certain.

Wiktionary2.3 / 3 votes

  1. certainadjective

    Antonyms:
    uncertain

  2. certainadjective

    Sure, positive, not doubting.

    Certain people are good at running.

    Antonyms:
    uncertain

English Synonyms and Antonyms2.0 / 1 vote

  1. certain

    That is authentic which is true to the facts; that is genuine which is true to its own claims; as, authentic history; genuine money.

    A 'genuine' work is one written by the author whose name it bears; an 'authentic' work is one which relates truthfully the matters of which it treats. For example, the apocryphal Gospel of St. Thomas is neither 'genuine' nor 'authentic.' It is not 'genuine,' for St. Thomas did not write it; it is not 'authentic,' for its contents are mainly fables and lies.

    Trench On the Study of Words lect. vi, p. 189. [W. J. Widdleton]

    Authentic is, however, used by reputable writers as synonymous with genuine, tho usually where genuineness carries a certain authority. We speak of accepted conclusions, certain evidence, current money, genuine letters, a legitimate conclusion or legitimate authority, original manuscripts, real value, received interpretation, sure proof, a true statement, a trustworthy witness, a veritable discovery.

    Synonyms:
    accepted, accredited, authentic, authoritative, authorized, current, genuine, legitimate, original, real, received, reliable, sure, true, trustworthy, veritable

    Antonyms:
    apocryphal, baseless, counterfeit, disputed, exploded, fabulous, false, fictitious, spurious, unauthorized

Princeton's WordNet2.0 / 2 votes

  1. certain(a)adjective

    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"

    Antonyms:
    undependable, flukey, unreliable, contingent, iffy, chancy, uncertain, careless, up in the air, indefinite, fluky

  2. certain(p), sureadjective

    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"

    Antonyms:
    iffy, unreliable, chancy, undependable, flukey, careless, fluky, up in the air, uncertain, contingent, indefinite

  3. certain(p)adjective

    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"

    Antonyms:
    undependable, indefinite, flukey, up in the air, chancy, uncertain, iffy, unreliable, fluky, careless, contingent

  4. certain, sureadjective

    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"

    Synonyms:
    certain(p), sealed, certain(a), trusted, indisputable, sure

    Antonyms:
    indefinite, fluky, contingent, flukey, undependable, iffy, unreliable, careless, chancy, uncertain, up in the air

  5. sealed, certainadjective

    established irrevocably

    "his fate is sealed"

    Synonyms:
    certain(p), sealed, sure, certain(a), plastered

    Antonyms:
    up in the air, indefinite, careless, unreliable, iffy, undependable, uncertain, flukey, chancy, fluky, contingent

  6. certain, sureadjective

    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"

    Synonyms:
    certain(p), sealed, certain(a), trusted, indisputable, sure

    Antonyms:
    chancy, unreliable, flukey, careless, iffy, up in the air, fluky, undependable, contingent, uncertain, indefinite

  7. certain, sureadjective

    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"

    Synonyms:
    certain(p), sealed, certain(a), trusted, indisputable, sure

    Antonyms:
    fluky, indefinite, chancy, iffy, undependable, careless, up in the air, unreliable, contingent, flukey, uncertain

Editors Contribution0.0 / 0 votes

  1. sure

    he was certain that he had got the question correct.

    Submitted by anonymous on October 5, 2020  
  2. confident

    i was certain i could win the race.

    Submitted by anonymous on January 11, 2021  

Dictionary of English Synonymes0.0 / 0 votes

  1. certainadjective

    Synonyms:
    indubitable, unquestionable, indisputable, undeniable, incontestable, uncontrovertible, unquestioned, undisputed, undoubted, absolute, positive, plain, past dispute, beyond all question, sure as fate, sure as a gun, clear as day, not doubtful

  2. certainadjective

    Synonyms:
    sure, assured, confident, undoubting, fully convinced

  3. certainadjective

    Synonyms:
    unfailing, infallible, never-failing

  4. certainadjective

    Synonyms:
    actual, real, existing

  5. certainadjective

    Synonyms:
    settled, determinate, fixed, stated, constant

  6. certainadjective

    Synonyms:
    one, some, particular

How to pronounce certain?

How to say certain in sign language?

Usage in printed sourcesFrom: 

Words popularity by usage frequency

rankingword
#92some
#143number
#212real
#328current
#575few
#622given
#691original
#716sure
#738specific
#739several
#831true
#842individual
#891received
#1100certain
#1113particular
#1286safe
#1299regular
#1300secure
#1392selected
#1467positive
#1635established
#1672fixed
#1703specified
#1752accepted
#1920actual
#2328determined
#3303authorized
#3639reliable
#4677trusted
#4882sealed
#5018genuine
#6065authentic
#6692accredited
#7608confident
#8066legitimate
#8869assured
#8933convinced
#15906authoritative
#23137trustworthy
#36577undeniable
#39400veritable
#39518unmistakable
#45550infallible
#50305plastered
#60486indisputable
#79655unfailing
#105864incontrovertible
#173566indubitable

How to use certain in a sentence?

  1. The Clinton campaign:

    We wanted to offer a look at how a Trump presidency would cause damage to the American economy and working families, we can be certain of this because we’ve read Trump’s ‘plans,’ listened to his words, reviewed what analysts have to say about what he wants to do. And it's the only logical conclusion.

  2. Herschel Walker:

    Fox News ''s very sad to me because any other country … I can promise you … they would not be representing that country, i totally disagree with Fox News ', but they have the right to do Fox News ', even though I think it's wrong. We have to have leaders that … are going to stand up and say the right thing. You can feel a certain way and I think that's great, but this is the United States of America Olympics. … I'm not sure that's the time or place.

  3. Rob Goldman:

    Simply showing certain job ads to different age groups on services like Facebook or Google may not in itself be discriminatory — just as it can be OK to run employment ads in magazines and on TV shows targeted at younger or older people, what matters is that marketing is broadly based and inclusive, not simply focused on a particular age group.

  4. Kevin Harvick:

    You go through spells of capitalizing on things and having good cars and mediocre cars and circumstances, and I think that part of this sport is those streaks come and go at certain race tracks, at RCR we had a lot of good, flat-track races at Richmond and Loudon, and we only won here one time, and I thought this was one of our better tracks.

  5. Brian Laundrie parents:

    It seems the water in the [reserve] is receding and certain areas are more accessible to search.


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"certain." Synonyms.com. STANDS4 LLC, 2024. Web. 14 Nov. 2024. <https://www.synonyms.com/synonym/certain>.

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