Definitions
1.adjectiveInsane; crazy, mentally deranged."He's got this mad idea that he's irresistible to women."
2.adjective(chiefly US; informal in UK) Angry, annoyed."Are you mad at me?"
3.adjectiveBizarre; incredible."It's mad that I got that job back a day after being fired."
4.adjectiveWildly confused or excited."to be mad with terror, lust, or hatred"
5.adjectiveExtremely foolish or unwise; irrational; imprudent.
6.adjective(usually with for or about) Extremely enthusiastic about; crazy about; infatuated with; overcome with desire for."Aren't you just mad for that red dress?"
7.adjective(of animals) Abnormally ferocious or furious; or, rabid, affected with rabies."a mad dog"
8.adjective(chiefly Northeastern US) Intensifier, signifies an abundance or high quality of a thing; very, much or many."I gotta give you mad props for scoring us those tickets. Their lead guitarist has mad skills. There are always mad girls at those parties."
9.adjective(of a compass needle) Having impaired polarity.