English word mad comes from Old English ġemǣdan, Proto-Indo-European *meyth₂-, and later Proto-Germanic *maidaz (Angry, enraged. Hurt, wounded. Mad, foolish.)
| Dictionary entry | Language | Definition |
|---|---|---|
| ġemǣdan | Old English (ang) | |
| *meyth₂- | Proto-Indo-European (ine) | |
| *moyth₂ós | Proto-Indo-European (ine) | |
| *maidaz | Proto-Germanic (gem-pro) | Angry, enraged. Hurt, wounded. Mad, foolish. |
| ġemād | Old English (ang) | |
| ġemǣded | Old English (ang) | |
| medd | Middle English (enm) | |
| mad | English (en) | (chiefly, US; UK dated + regional) Angry, annoyed.. (colloquial, usually with for or about) Extremely enthusiastic about; crazy about; infatuated with; overcome with desire for.. (of a compass needle) Having impaired polarity.. (of animals) Abnormally ferocious or furious; or, rabid, affected with rabies.. (slang, chiefly Northeastern US) Intensifier, signifies an abundance or high quality [...] |