pugnacious
爱争吵的，好斗的
e.g. There's one pugnacious member on the committee who won't agree to anything.
这个词可以溯源到拉丁语的名词pugnus, 意思是拳头. 一方面有动词pugnare, 意思是to fight. 另一方面还有名词pugil, 意思是拳击手. 在现代英语中用来指职业拳击手的词pugilist就是来源于此.