brainish


brainish (http://definr.com/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)]