certain knowledge

17 LETTERS · STARTS WITH C

certain knowledge is a valid 17-letter word worth 27 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3E1R1T1A1I1N1K5N1O1W4L1E1D2G2E1

3 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 5 + 1 + 1 + 4 + 1 + 1 + 2 + 2 + 1 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does certain knowledge mean?