certainest

Adjective

certain (comparative more certain or certainer, superlative most certain or certainest)

1. Sure in one's mind, positive; absolutely confident in the truth of something.
   • I was certain of my decision.
2. Not to be doubted or denied; established as a fact.
   • Now that more experiments have been run, the theory is certain and the argument is settled.
3. Sure to happen, inevitable; assured.
   • It is certain that Spain will reach the finals. / Spain is now certain to reach the finals. / Spain is now certain of a place in the finals.

   Synonyms:

   unavoidable

4. Unfailing; infallible.
   • I have often wished, that I knew so certain a remedy in any other disease1702, Richard Mead, Mechanical Account of Poisons
5. Fixed; regular; determinate.
   • at certain intervals
6. Particular and definite, but unspecified or unnamed; used to introduce someone or something without going into further detail.
   • Every wine has a certain distinctive character which sets it apart from all others.

See all 13 meanings of certain