under detention

15 LETTERS · STARTS WITH U

under detention is a valid 15-letter word worth 16 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
U1N1D2E1R1D2E1T1E1N1T1I1O1N1
1 + 1 + 2 + 1 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =16 PTS
DOUBLE WORD → 32TRIPLE WORD → 48
MEANING

What does under detention mean?

1