The Collaborative International Dictionary
Brainish
Brainish \Brain"ish\, a.
Hot-headed; furious. [R.]
--Shak.
Wiktionary
brainish
a. (context obsolete English) hot-headed; furious
WordNet
brainish
adj. characterized by undue haste and lack of thought or deliberation; "a hotheaded decision"; "liable to such impulsive acts as hugging strangers"; "an impetuous display of spending and gambling"; "madcap escapades"; (`brainish' is archaic) [syn: hotheaded, impulsive, impetuous, madcap, tearaway(a)]