Synonyms: sure thing, certainty, foregone conclusion
Definition: something that is certain
Usage: his victory is a certainty
Similar words: quality
Definition: an essential and distinguishing attribute of something or someone
Usage: the quality of mercy is not strained--Shakespeare
Synonyms: certainty
Definition: the state of being certain
Usage: his certainty reassured the others
Similar words: cognitive state, state of mind
Definition: the state of a person's cognitive processes