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certainty

[sur-tn-tee] /ˈsɜr tn ti/
noun, plural certainties.
1.
the state of being certain.
2.
something certain; an assured fact.
Idioms
3.
for / of a certainty, certainly; without a doubt:
I suspect it, but I don't know it for a certainty.
Origin of certainty
1250-1300
1250-1300; Middle English certeinte < Anglo-French, equivalent to certein certain + -te -ty2
Related forms
noncertainty, noun, plural noncertainties.
Can be confused
certainty, certitude.
Synonyms
1. certitude, assurance, confidence. 2. truth.
Synonym Study
1. See belief.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for certainty
Contemporary Examples
Historical Examples
  • Well, Shepler might be hurled from that certainty by one hour of determined action.

    The Spenders Harry Leon Wilson
  • It was difficult to state with certainty what bad deed she had ever done, or what good deed.

    Malbone Thomas Wentworth Higginson
  • There was no lessening of the expression of certainty on the young man's face.

    Within the Law Marvin Dana
  • Gracie Dennis thought she saw the certainty of failure, and was sorry for it.

    Ester Ried Yet Speaking Isabella Alden
  • Mary's voice came with a certainty of conviction born of fact.

    Within the Law Marvin Dana
British Dictionary definitions for certainty

certainty

/ˈsɜːtəntɪ/
noun (pl) -ties
1.
the condition of being certain
2.
something established as certain or inevitable
3.
for a certainty, without doubt
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for certainty
n.

c.1300, certeynte, "surety, pledge," from Anglo-French certeinté (late 13c.), Old French certainete "certainty," from Latin or Vulgar Latin *certanitatem (source of Old Spanish certanedad); see certain. Meaning "that which is certain" is attested from early 14c.; meaning "quality of being certain" is from mid-14c.

Online Etymology Dictionary, © 2010 Douglas Harper
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14
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