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Definition of certainty

certainty

/ˈsɝːtənti/
cer · tain · ty
Adverb:certainly
•
Plural:certainties
•
Adjective:certain
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certainty Lexical Profile

certainty Game Scores & Validity

• noun

1

The state of being completely confident or having no doubt about something; firm conviction that something is the case.

Example

"She spoke with great certainty about the findings of her historical research."

2

A fact, event, or outcome that is indisputably true or completely reliable to happen.

Example

"Given the team's dominant performance all season, their qualification for the finals is a virtual certainty."

Synonyms
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Antonyms
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• Rhymes for certainty

• Nearby Words

certain
certainly
certainness
certainty
certifiable
certifiably
certificate

Word Origin & Etymology

Borrowed from Anglo-Norman 'certainte' and Old French 'certeneté', derived from Vulgar Latin '*certanitas', ultimately from Latin 'certus' meaning 'settled, resolved, or sure'.

Cite this Entry

Wordmom. (2026). Definition of Certainty. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/certainty
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