Certainty

State of being sure and having no doubt.

Certainty is a state of being sure or having no doubt about something. It's the quality of being without any doubt or uncertainty.

/ˈsɜːrtɪnti/

From Middle English certayte, from Old French certeinte, from Latin certitudo.

Certainty means you're absolutely sure about something, like knowing the sky is blue on a sunny day.

What does certainty mean? It means being completely sure about something
How is certainty different from doubt? Certainty has no doubt, while doubt implies uncertainty
Can you be certain about everything? No, certainty is often difficult to achieve

surety conviction confidence

doubt uncertainty

belief knowledge

abstract concept philosophical concept