Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun informant

2 senses of informant

Sense 1
informant, source -- (a person who supplies information)
       => communicator -- (a person who communicates with others)

Sense 2
witness, witnesser, informant -- (someone who sees an event and reports what happened)
       => perceiver, percipient, observer, beholder -- (a person who becomes aware (of things or events) through the senses)
       => speaker, talker, utterer, verbalizer, verbaliser -- (someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous); "the speaker at commencement"; "an utterer of useful maxims")