Definition of mad-brained in English:

mad-brained

adjective

rare
  • Having or manifesting a mad brain; hot-headed, uncontrolled, scatterbrained.

Origin

Late 16th century; earliest use found in George Gascoigne (d. 1577), author and soldier. From mad + brain + -ed.

Pronunciation

mad-brained

/ˈmadbreɪnd/