1580s, "pertaining to bats," from bat (n.2) + -y (2). Slang sense "nuts, crazy" is attested from 1903, from the expression (to have) bats in (one's) belfry, also meaning "not be right in the head" (1899).
雙語(yǔ)例句
1. Laura's going a bit batty.
勞拉變得有些古怪。
來(lái)自柯林斯例句
2. Aunt Batty loved life as no other human being I ever knew loved life.