1. informant - Noun
2. informant - Verb
One who, or that which, informs, animates, or vivifies.
One who imparts information or instruction.
One who offers an accusation; an informer. See Informer.
Source: Webster's dictionaryLooking for an entirely reliable informant is like looking for a chaste mistress. Cassandra Clare
I can't reveal my informant. Anneli Jaatteenmaki
I don't know of any case that involves computer hacking where there were multiple defendants charged where there wasn't an informant on the case. Kevin Mitnick
I write for the people I grew up with. I took extreme pains for my book to not be a native informant. Not: 'This is Dominican food. This is a Spanish word.' I trust my readers, even non-Spanish ones. Junot Diaz
According to Clarke, their informant feared that the stone might be stolen if French soldiers saw it. Source: Internet
A confidential informant is someone who claimed to have witnessed an event or have hearsay information, but whose identity is being withheld from at least one party (typically the criminal defendant). Source: Internet