mad as a March hare

Adjective

Meaning

mad as a March hare (not comparable)

(simile, colloquial) Crazy, demented.

Source: en.wiktionary.org

Synonyms

potty round the bend unhinged certifiable mentally ill mad as a hatter

Antonyms

lucid stable balanced coherent sane clear-headed

Examples

He is as mad as a March hare. Miguel de Cervantes

Close letter words and terms

mad as a fish mad as a hatter mad as a hornet mad as a meat axe mad as a mongoose mad as a wet hen