1. arising from, indicative of, or marked by mental disorder —not used technically
2. completely unrestrained by reason and judgment unable to think in a clear or sensible way
driven mad by the pain mad with jealousy
3. incapable of being explained or accounted for
a mad decision
4. intensely angry or displeased
What are you so mad about? Everyone was mad about the delay. That kind of behavior really gets me mad. I'm so mad I could spit.
5. carried away by enthusiasm or desire extremely or excessively fond of or enthusiastic about something or someone
mad about horses … there is a nouveau riche demographic mad for diamonds and Lamborghinis …
— Kevin D. Williamson —often used in combination
trivia known to only the most movie-mad film buffsa power-mad villainmoney-mad
6. affected with rabies rabid
a mad dog
7. marked by wild gaiety and merriment hilarious
of their childhood, of the mad pranks they played
— Winston Churchill
8. intensely excited frantic
driving him mad with jealousy
— Edmund Wilson
9. marked by intense and often chaotic activity wild
a mad scramble
10. great in quantity, amount, extent, or degree
making mad money Her performance won her mad respect from fans and peers alike, but the media response was tempered at best.
— Joan Morgan
11. to an extreme degree
spending like mad working like mad to get the job done on time
12. madden
13. a fit or mood of bad temper
14. anger, fury
15. very, extremely
We were mad tight, many of us born and raised in this same spot.
— Sister Souljah
16. mutual assured destruction; mutually assured destruction
17. angry
He's mad at his brother.
18. insane sense 1
… has the whole world gone mad today?
— Christopher Paul Curtis, The Watsons
19. done or made without thinking
a mad promise
20. infatuated
She is mad about horses.
21. having rabies
a mad dog
22. marked by intense and often disorganized activity
At the end of the game, there was a mad scramble.
23. with a great amount of energy or speed
The crowd cheered like mad. He ran like mad.
24. affected with rabies rabid