1 small and unimportant 小的；琐碎的；不重要的: He didn't want to get involved with the petty details. 他不想牵扯到琐碎的细节。petty crime/theft (= that is not very serious) 轻微罪行；小偷小摸

2 unkind or unpleasant to other people (for a reason that does not seem very important) 气量小；心胸狭窄；小器；小心眼: petty jealousy/revenge 心胸狭窄的妒忌╱报复