mixed doubles

13 LETTERS · STARTS WITH M

mixed doubles is a valid 13-letter word worth 25 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

M3I1X8E1D2D2O1U1B3L1E1S1

3 + 1 + 8 + 1 + 2 + 0 + 2 + 1 + 1 + 3 + 1 + 1 + 1 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does mixed doubles mean?