clandestine behavior

20 LETTERS · STARTS WITH C

clandestine behavior is a valid 20-letter word worth 30 points in Scrabble and 35 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3L1A1N1D2E1S1T1I1N1E1B3E1H4A1V4I1O1R1

3 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 4 + 1 + 4 + 1 + 1 + 1 =30 PTS

DOUBLE WORD → 60TRIPLE WORD → 90

MEANING

What does clandestine behavior mean?