adversary

NOUN /ædvər,sɛri/
9 LETTERS · 4 SYLLABLES · STARTS WITH A

adversary is a valid 9-letter word worth 16 points in Scrabble and 16 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
A1D2V4E1R1S1A1R1Y4
1 + 2 + 4 + 1 + 1 + 1 + 1 + 1 + 4 =16 PTS
DOUBLE WORD → 32TRIPLE WORD → 48
MEANING

What does adversary mean?