mad

If you're mad about something, you've lost your temper. If you've gone mad, you've lost your mind.

Just like it's more common to be angry than to be insane, you're more likely to use mad to describe someone who's ticked off than to describe someone who has serious mental problems. If you say you're “mad about” something, you're saying you like it so much it distracts you.

PRIMARY MEANINGS OF: mad

1
adj
roused to anger
2
adj
affected with madness or insanity
FULL DEFINITIONS OF: mad
1

adj roused to anger

“she gets mad when you wake her up so early”
mad at his friend”
Synonyms:
huffy, sore
angry
feeling or showing anger
2

adj affected with madness or insanity

“a man who had gone mad
Synonyms:
brainsick, crazy, demented, disturbed, sick, unbalanced, unhinged
insane
afflicted with or characteristic of mental derangement

adj marked by uncontrolled excitement or emotion

“a mad whirl of pleasure”
Synonyms:
delirious, excited, frantic, unrestrained
wild
marked by extreme lack of restraint or control

adj very foolish

“a completely mad scheme to build a bridge between two mountains”
Synonyms:
harebrained, insane
foolish
devoid of good sense or judgment
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