certainty

/ˈsɜːrtənti/
noun
  1. The state of being completely sure about something; having no doubt.
    • She spoke with such certainty that everyone believed her.
    • He needs certainty in his life, not constant change.
    • There is no certainty that the weather will be nice for the picnic.
  2. Something that is definitely true or will definitely happen.
    • After the election results, his victory was a certainty.
    • It's a near certainty that the store will close early on the holiday.
    • Death and taxes are often called the only certainties in life.
What does "certainty" mean? | whatsthatwordmean | whatsthatwordmean