mad

Meanings

1. 1
   adj

   Angry or annoyed.

   Are you still mad at me about yesterday?

2. 2
   adj

   Very foolish or unwise; crazy.

   You want to spend a thousand pounds on a pair of shoes? Are you mad?

3. 3
   adj

   Very enthusiastic about or fond of something.

   My little brother is mad about dinosaurs.

4. 4
   adj

   Having a serious mental illness.

   In the old story, grief slowly drove the king mad.

From Middle English mad, madde, madd, medd, from Old English ġemǣd, ġemǣded (“enraged”), past participle of ġemǣdan, *mǣdan (“to make insane or foolish”), from Proto-Germanic *maidijaną (“to change; damage; cripple; injure; make mad”), from Proto-Germanic *maidaz ("weak; crippled"; compare Old English gemād (“silly, mad”), Old High German gimeit (“foolish, crazy”), literary German gemeit (“mad, insane”), Gothic 𐌲𐌰𐌼𐌰𐌹𐌸𐍃 (gamaiþs, “crippled”)), from Proto-Indo-European *mey- ("to change"; compare Old Irish máel (“bald, dull”), Old Lithuanian ap-maitinti (“to wound”), Sanskrit मेथति (méthati, “he…

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