- moderator (n.)
[moderator 词源字典]
- late 14c., "ruler, governor," from Latin moderator "manager, ruler, director," literally "he who moderates," from moderatus (see moderate (adj.)). Meaning "one who acts as an umpire" is from 1560s. Fem. form moderatrix attested from 1530s.[moderator etymology, moderator origin, 英语词源]