not possible

12 LETTERS · STARTS WITH N

not possible is a valid 12-letter word worth 15 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
N1O1T1P3O1S1S1I1B3L1E1
1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 =15 PTS
DOUBLE WORD → 30TRIPLE WORD → 45
MEANING

What does not possible mean?

1