What does certainty mean?

Definitions for certainty
ˈsɜr tn ticer·tain·ty

This dictionary definitions page includes all the possible meanings, example usage and translations of the word certainty.

Princeton's WordNet

  1. certaintynoun

    the state of being certain

    "his certainty reassured the others"

  2. certainty, sure thing, foregone conclusionnoun

    something that is certain

    "his victory is a certainty"


  1. certaintynoun

    The state of being certain.

  2. certaintynoun

    An instance of being certain.

  3. Etymology: certeynte, from certeinte, from certeinete, from *, from certus

Samuel Johnson's Dictionary

  1. Certaintynoun

    Etymology: from certain.

    Certainty is the perception of the agreement or disagreement of our ideas. John Locke.

    Doubting things go ill, often hurts more
    Than to be sure they do; for certainties
    Or are past remedies, or timely knowing,
    The remedy then born. William Shakespeare, Cymbeline.


  1. certainty

    Certainty is the state of being completely confident or sure about something, a situation where there is no doubt or it is free from ambiguity. It could also refer to a situation or event that is inevitable or assured to happen.

Webster Dictionary

  1. Certaintynoun

    the quality, state, or condition, of being certain

  2. Certaintynoun

    a fact or truth unquestionable established

  3. Certaintynoun

    clearness; freedom from ambiguity; lucidity

  4. Etymology: [OF. certainet.]


  1. Certainty

    Certainty is perfect knowledge that has total security from error, or the mental state of being without doubt. Objectively defined, certainty is total continuity and validity of all foundational inquiry, to the highest degree of precision. Something is certain only if no skepticism can occur. Philosophy seeks this state. It is widely held that certainty about the real world is a failed historical enterprise. This is in large part due to the power of David Hume's problem of induction. Physicist Carlo Rovelli adds that certainty, in real life, is useless or often damaging.

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British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'certainty' in Nouns Frequency: #2273

How to pronounce certainty?

How to say certainty in sign language?


  1. Chaldean Numerology

    The numerical value of certainty in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of certainty in Pythagorean Numerology is: 7

Examples of certainty in a Sentence

  1. Clive Staples Lewis:

    We may not be able to get certainty, but we can get probability, and half a loaf is better than no bread.

  2. Johann K. Lavater:

    Never tell evil of a man, if you do not know it for certainty, and if you know it for a certainty, then ask yourself, 'Why should I tell it'

  3. Ashley Montague:

    Science has proof without any certainty. Creationists have certainty without any proof.

  4. Ed Metzger:

    The main customer benefits are certainty of timing, so you know when the payment is going to arrive and certainty of value.

  5. Steve Vladeck:

    For California, and I think millions of Americans, it is indispensable to get clarity and certainty, and the best way to get certainty is to go to Supreme Court.

Popularity rank by frequency of use


Translations for certainty

From our Multilingual Translation Dictionary

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"certainty." Definitions.net. STANDS4 LLC, 2023. Web. 9 Dec. 2023. <https://www.definitions.net/definition/certainty>.

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    the region of the body of a vertebrate between the thorax and the pelvis
    • A. trigger
    • B. directory
    • C. perusal
    • D. abdomen

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