Synonyms and Antonyms of informer
- the informer who told the police about that conspiracy has angered a lot of dangerous people
betrayer, canary [slang], deep throat, fink, informant, nark [British], rat, rat fink, snitch, snitcher, squealer, stoolie, stool pigeon, talebearer, tattler, tattletale, telltale, whistle-blower