Dictionary
cer•tain•ty
Pronunciation: (sûr'tn-tē), [key]—
n.,
—pl. -ties.
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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.