certainty

Definitions

The state of being free from doubt or reservation.

Something that is known or proved to be true.

The quality of being reliably true or inevitable.

Examples

She spoke with such certainty that no one dared to question her decision.

There is no absolute certainty that the project will be completed by Friday.

He moved with the quiet certainty of a man who had done this a thousand times before.

Synonyms

assurance conviction confidence sureness definiteness certitude indubitability

Antonyms

uncertainty doubt hesitation ambiguity skepticism indecision vagueness