round_the_bend
1. [ adjective ] informal or slang terms for mentally irregular
Synonyms: balmy barmy bats batty bonkers buggy cracked crackers daft dotty fruity haywire kookie kooky loco loony loopy nuts nutty wacky whacky around_the_bend
Examples:

"it used to drive my husband balmy"

Related terms: insane
Similar spelling:   Round_Table