mutually exclusive

ADJECTIVE
18 LETTERS · STARTS WITH M

mutually exclusive is a valid 18-letter word worth 34 points in Scrabble and 42 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
M3U1T1U1A1L1L1Y4E1X8C3L1U1S1I1V4E1
3 + 1 + 1 + 1 + 1 + 1 + 1 + 4 + 0 + 1 + 8 + 3 + 1 + 1 + 1 + 1 + 4 + 1 =34 PTS
DOUBLE WORD → 68TRIPLE WORD → 102
MEANING

What does mutually exclusive mean?

ADJECTIVE · 1 SENSE
1

Unable for both to exist or be true at the same time.