let slip

8 LETTERS · STARTS WITH L

let slip is a valid 8-letter word worth 9 points in Scrabble and 12 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1E1T1S1L1I1P3
1 + 1 + 1 + 0 + 1 + 1 + 1 + 3 =9 PTS
DOUBLE WORD → 18TRIPLE WORD → 27
MEANING

What does let slip mean?

1