preproving

10 LETTERS · 3 SYLLABLES · STARTS WITH P

preproving is a valid 10-letter word worth 18 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3R1E1P3R1O1V4I1N1G2

3 + 1 + 1 + 3 + 1 + 1 + 4 + 1 + 1 + 2 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does preproving mean?