sexual perversion

NOUN /sɛkʃuəl_pər'vɜrʒən/
17 LETTERS · STARTS WITH S

sexual perversion is a valid 17-letter word worth 28 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1E1X8U1A1L1P3E1R1V4E1R1S1I1O1N1
1 + 1 + 8 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 4 + 1 + 1 + 1 + 1 + 1 + 1 =28 PTS
DOUBLE WORD → 56TRIPLE WORD → 84
MEANING

What does sexual perversion mean?