Word Study
barmy
OXFORD DICTIONARY
barmy, adj. (barmier, barmiest) esp. Brit. sl. crazy, stupid.
Derivative
barmily adv. barminess n.
Etymology
earlier = frothy, f. BARM
THESAURUS
barmy
balmy, bananas, bats, batty, beany, bonkers, buggy, bughouse, bugs, crackers, cuckoo, daffy, diastatic, dippy, dotty, enzymic, fermenting, flaky, flipped, foam-flecked, foamy, freaked-out, frothy, fruitcakey, fruity, gaga, goofy, haywire, heady, just plain nuts, kooky, lathery, leavening, loony, loopy, nuts, nutty, off the hinges, off the track, off the wall, potty, raising, round the bend, screwball, screwballs, screwy, slaphappy, soapsuddy, soapsudsy, soapy, spumose, spumous, spumy, suddy, sudsy, wacky, working, yeastyFor further exploring for "barmy" in Webster Dictionary Online