characterized by undue haste and lack of thought or deliberation
同义词：hotheaded??/??impulsive??/??impetuous??/??madcap??/??tearaway(a)
brainish:
brain +? -ish
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。