Definition of Mad

Adjective: mad (madder,maddest) mad

Roused to anger
"she gets mad when you wake her up so early"; "mad at his friend";
- huffy, sore
Affected with madness or insanity
"a man who had gone mad";
- brainsick, crazy, demented, disturbed, sick, unbalanced, unhinged
Marked by uncontrolled excitement or emotion
"a mad whirl of pleasure";
- delirious, excited, frantic, unrestrained
Very foolish
"a completely mad scheme to build a bridge between two mountains";
- harebrained, insane