Another word for rat

rat Synonyms

rat

n.

A rodent
mouse, muskrat, vermin; see pest 1, rodent.
Varieties of rats include: white, black, brown, house, laboratory, longtailed, water, swamp, desert, marsh, tree, giant, field, bamboo, cotton, kangaroo, jerboa, river, pack, big-eared, short-eared, red-nosed.
*A deserter or betrayer
informer, turncoat, fink*; see deserter, traitor.

WEBSTER’S NEW WORLD® ROGET’S A-Z THESAURUS by Charlton Laird and the editors of Webster’s New World dictionaries. Copyright © 1999 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Another word for rat

noun

(Informal)
One who betrays:
betrayer, double-crosser, Judas, traitor. See trust
(Informal)
One who gives incriminating information about others:
informant, informer, tattler, tattletale. (Informal) tipster. (Slang) fink, snitch, snitcher, squealer, stoolie, stool pigeon. See knowledge, law
(Informal)
A person who has defected:
apostate, defector, deserter, recreant, renegade, runagate, tergiversator, turncoat. See approach

verb

(Slang)
To abandon one's cause or party usually to join another:
apostatize, defect, desert³, renegade, tergiversate, turn. Idioms: change sides, turn one's coat. See approach, trust
(Slang)
To be treacherous to.
Also used with on: betray, double-cross. (Slang) sell out. Idiom: sell down the river . See trust
(Slang)
To give incriminating information about others, especially to the authorities:
inform, talk, tattle, tip³ (off). (Informal) fink. (Slang) sing, snitch, squeal, stool. Idiom: blow the whistle. See knowledge, law