| squeal(verb, phrasal verb, law, knowledge, slang) | |
| blow the whistle(verb, expression, idiom, law, turn) | |
| apostatize(verb, reject, dismiss, withdraw, abandon) | |
| spill the beans(verb, expression, idiom, report, expose) | |
| louse(noun, person, immoral, sly, creep) | |
| tattletale(noun, law, person, knowledge, source) | |
| cat's prey(expression, animal, target, prey, quarry) | |
| changeling(noun, person, behavior, traitor, betrayer) | |
| blighter(noun, adjective, nothingness, zero, nonentity) | |
| quisling(noun, person, behavior, traitor, betrayer) | |
| stiff(adjective, nothingness, zero, nonentity) | |
| scumbag(noun, person, individual, boor, blighter) | |
| traditor(noun, person, behavior, traitor, betrayer) | |
| dormouse | |
| double agent | |
| eland | |
| eyra | |
| fall | |
| fallow deer | |
| false hair |
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| APA | Smart Define. (2015). rat thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rat/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "rat thesaurus" https://smartdefine.org/rat/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, rat thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rat/thesaurus/synonyms>. |
| MLA | Smart Define. "rat thesaurus" 21 April 2015. Web. 21 September 2026. <https://smartdefine.org/rat/thesaurus/synonyms> |