noun
1. a person who supplies information (Freq. 1)
• Syn: ↑source
• Derivationally related forms: ↑inform
• Hypernyms: ↑communicator
• Hyponyms:
↑informer, ↑betrayer, ↑rat, ↑squealer, ↑blabber, ↑leaker, ↑passive source, ↑whistle blower, ↑whistle-blower, ↑whistleblower
2. someone who sees an event and reports what happened
• Hypernyms:
↑perceiver, ↑percipient, ↑observer, ↑beholder, ↑speaker, ↑talker, ↑utterer, ↑verbalizer, ↑verbaliser
Useful english dictionary. 2012.