liberator

Từ điển WordNet v3.1 - WordNet Dictionary

noun

someone who releases people from captivity or bondage
• Ant:
captor
• Derivationally related forms:
liberate
• Hypernyms:
benefactor, helper
• Hyponyms:
emancipator, manumitter

• Từ trái nghĩa / Antonyms:
  captor, capturer