if not

6 LETTERS · STARTS WITH I

if not is a valid 6-letter word worth 8 points in Scrabble and 9 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1F4N1O1T1
1 + 4 + 0 + 1 + 1 + 1 =8 PTS
DOUBLE WORD → 16TRIPLE WORD → 24
MEANING

What does if not mean?

1