Nouns

(n)buggy, roadstera small lightweight carriage; drawn by a single horse

Adjectives

(s)balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whackyinformal or slang terms for mentally irregular“it used to drive my husband balmy”
(s)buggyinfested with bugs