do-gooder

Từ điển Oxford Advanced Learner 8th

ˌdo-ˈgooder [do-gooder do-gooders] BrE NAmE noun (informal, disapproving)
a person who tries to help other people but who does it in a way that is annoying
•Members of the church are not just a bunch of do-gooders.

• Từ đồng nghĩa / Synonyms:
  humanitarian, improver