Synonyms of the word

informer

• n. One who informs someone else about something.
• n. A person who tells authorities about improper or illegal activity.
• n. One who informs, animates, or inspires.

betrayer

• n. Someone who betrays, or reveals confidential information; a squealer or informer.
• n. A double-crosser.

blabber

• v. To blather; to talk foolishly or incoherently.
• v. To blab; to let out a secret.
• v. (Britain, obsolete) To stick out one's tongue.
• n. A person who blabs; a tattler; a telltale.

informant

• n. One who relays confidential information to someone, especially to the police; an informer.
• n. (linguistics) A native speaker who acts as a linguistic reference for a language being studied. The informant…

rat

• n. (zoology) A medium-sized rodent belonging to the genus Rattus.
• n. (informal) A term indiscriminately applied to numerous members of several rodent families (e.g. voles…
• n. (informal) A person who is known for betrayal; a scoundrel; a quisling.
• n. (informal) An informant or snitch.
• n. (slang) A person who routinely spends time at a particular location.
• n. Scab.
• n. (north-west London, slang) Vagina.
• n. A wad of shed hair used as part of a hairstyle.
• v. (usually with “on” or “out”) To betray someone and tell their secret to an authority or an enemy; to turn…
• v. (of a dog, etc.) To kill rats.
• n. (regional) A scratch or a score.
• n. (nautical, regional) A place in the sea with rapid currents and crags where a ship is likely to be torn…
• v. (regional) To scratch or score.
• v. (regional, rare, obsolete) To tear, rip, rend.

source

• n. The person, place, or thing from which something (information, goods, etc.) comes or is acquired.
• n. Spring; fountainhead; wellhead; any collection of water on or under the surface of the ground in which…
• n. A reporter's informant.
• n. (computing) Source code.
• n. (electronics) The name of one terminal of a field effect transistor (FET).
• v. (chiefly US) To obtain or procure: used especially of a business resource.
• v. (transitive) To find information about (a quotation)'s source (from which it comes): to find a citation…

squealer

• n. An animal that, or a person who squeals; especially a pig.
• n. (slang) an informant.
• n. The European swift.
• n. The harlequin duck.
• n. The American golden plover.