/serr"tn tee/ , n. , pl. certainties .
1. the state of being certain.
2. something certain; an assured fact.
3. for or of a certainty , certainly; without a doubt: I suspect it, but I don't know it for a certainty.
[ 1250-1300; ME certeinte certein CERTAIN + -te -TY 2 ]
Syn. 1. certitude, assurance, confidence. See belief. 2. truth.