English

madhead

From mad + head.

A compound of mad + head

Proto-Indo-European *meyth₂- ‘to change’

…

Proto-Germanic *maidijaną ‘to change’

Old English *mǣdan

Old English ġemǣdan

Middle English mad

English mad

Proto-Indo-European *kap- ‘head’

…

Proto-Germanic *haubudą ‘head’

Proto-West Germanic *haubud

Old English hēafod ‘head’

Middle English heed ‘head’

English head

Today it means

noun A crazy person.

Language periods are conventional ranges, not dates for this word.