Found 2 items, similar to brainish.
English → English (WordNet) Definition: brainish 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)]
English → English (gcide) Definition: Brainish Brainish \Brain"ish\, a. Hot-headed; furious. [R.] --Shak. [1913 Webster]