batty

• POS: Adjective, Noun
• HYPHEN: bat=ty

CIDE DICTIONARY

batty, a. 

•  Belonging to, or resembling, a bat.  Shak.  [1913 Webster]
•  Crazy; demented; loony; nuts; as, her constant gabbing is driving me batty.  [PJC]

OXFORD DICTIONARY

batty, adj. (battier, battiest) sl. crazy.

Derivative

battily adv. battiness n.

Etymology

BAT(2) + -Y(1)

THESAURUS

batty

apish, asinine, balmy, bananas, barmy, bats, beany, bedlamite, befooled, beguiled, besotted, bonkers, brainless, buffoonish, buggy, bughouse, bugs, cockeyed, cracked, crackers, crazed, crazy, credulous, cuckoo, daffy, daft, dazed, deranged, dippy, dizzy, doting, dotty, dumb, fatuitous, flipped, fond, fool, foolheaded, foolish, freaked-out, fruitcakey, fruity, fuddled, futile, gaga, goofy, gulled, haywire, idiotic, imbecile, inane, inept, infatuated, insane, just plain nuts, kooky, loony, loopy, mad, maniac, maudlin, moronic, nuts, nutty, off the hinges, off the track, off the wall, potty, round the bend, sappy, screwball, screwballs, screwy, senseless, sentimental, silly, slaphappy, stupid, thoughtless, wacky, wet, witless