# certainty

Pronunciation: say "SUR-tn-tee" US /ˈsɝtn̩ti/, UK /ˈsɜːtn̩ti/

## Noun

1. The state of being completely sure that something is true or will happen.
   - Simple: The feeling of being completely sure about something.
   - _He stated his conclusion with complete certainty._
   - _The scientists could offer no certainty about when the volcano would erupt._
2. A fact or truth that has been established beyond any possible question.
   - Simple: A fact that is so clearly true that no one can doubt it.
   - _The election result was treated as a certainty long before the votes were counted._
   - _Among the few certainties of science is that valid observations must be repeatable._
3. A particular occasion or instance in which someone feels certain about something.
   - Simple: A single moment or case of feeling completely sure about something.
   - _A momentary certainty washed over her as she recognized the voice._
   - _Each new certainty he reached only seemed to lead to more questions._

## Origin

From Middle English certeynte ('surety'), from Anglo-Norman certeinte and Old French certeinete, going back through Vulgar Latin *certānitās to Latin certus.

Source: DictionaryAI, https://dictionaryai.com/define/certainty (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).