WordNet: informant, source

a person who supplies information

• hypernym communicator

• hyponym betrayer, blabber, informer, rat, squealer

• hyponym leaker

• hyponym passive source

• hyponym whistle-blower, whistle blower, whistleblower

informant

• (englanti) inform (derivationally related)
• (suomi) tietolähde (synonyymi)

source

• (suomi) lähde (synonyymi)