Mad as a hatter

Meaning: Completely eccentric or unhinged.

Language: English

Literally: As mad as a hat-maker

Category: The Absurd

Origin: 18th–19th-century hat-makers cured felt with mercury and suffered poisoning — tremors, slurred speech, erratic moods; the phrase predates Lewis Carroll's Hatter.

More idioms — The Absurd

More English idioms

From our untranslatable words

  • Flemme — A total absence of motivation to do anything — a profound, almost existential reluctance…
  • Spleen — A deep, existential ennui — a heavy, formless sadness and disgust with the world and ones…
  • Épanouissement — The full flourishing of a person — blooming into your most complete, radiant self. More t…

Browse all untranslatable words →

← Back to Idioms