Added 9 October 2026
certainty
/ˈsɝtn̩ti/ noun
In Latin: certum, certitūdō Wiktionary
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about certainty at Wordnik → Where our words come from →
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The state of being certain.
with certainty
- An instance of being certain.
- A fact or truth unquestionably established.
Origin
From Middle English certeynte (“surety”), from Anglo-Norman certeinte, from Old French certeinete, from Vulgar Latin *certānitās, from Latin certus.
From Wiktionary, via Kaikki.org (CC BY-SA)