certainty
- The state of being sure or confident about something; the quality of being reliably true or inevitable. nounThere is a certainty about her success in the upcoming competition.The certainty of the sunrise gives us a sense of stability.
- Something that is certain or assured; a fact or situation that is definitely true or will happen. nounDeath and taxes are often said to be the only certainties in life.Winning the championship seemed like a certainty after their impressive season.