interrogation mark

18 LETTERS · STARTS WITH I

interrogation mark is a valid 18-letter word worth 24 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1T1E1R1R1O1G2A1T1I1O1N1M3A1R1K5

1 + 1 + 1 + 1 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 5 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does interrogation mark mean?