do-gooder

Từ điển WordNet v3.1 - WordNet Dictionary

noun

someone devoted to the promotion of human welfare and to social reforms
• Syn:
humanitarian, improver
• Derivationally related forms:
improve (for: improver), do good
• Hypernyms:
benefactor, helper

• Từ đồng nghĩa / Synonyms:
  humanitarian, improver