antianxiety drug

NOUN
16 LETTERS · STARTS WITH A

antianxiety drug is a valid 16-letter word worth 27 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
A1N1T1I1A1N1X8I1E1T1Y4D2R1U1G2
1 + 1 + 1 + 1 + 1 + 1 + 8 + 1 + 1 + 1 + 4 + 0 + 2 + 1 + 1 + 2 =27 PTS
DOUBLE WORD → 54TRIPLE WORD → 81
MEANING

What does antianxiety drug mean?