ratifier

Từ điển WordNet v3.1 - WordNet Dictionary

noun

someone who expresses strong approval
• Syn:
subscriber, endorser, indorser
• Derivationally related forms:
ratify, indorse (for: indorser), endorse (for: endorser), subscribe (for: subscriber)
• Hypernyms:
supporter, protagonist, champion, admirer, booster, friend