8
rotter(noun, sly, creep, rake, rogue)
8
tattle(verb, law, give, knowledge, disclosure)
8
tergiversate(verb, reject, dismiss, withdraw, abandon)
7
stoolie(noun, law, knowledge, slang, source)
7
long-tailed being(expression, nature, animal, creature, rodent)
7
blab(verb, disclosure, sneak, informant, squealer)
7
blackleg(noun, feature, person, behavior, tergiversation)
7
defect(verb, break, reject, dismiss, turn)
7
double-crosser(noun, person, trust, source, grass)
7
ratter(noun, person, behavior, traitor, betrayer)
7
stool pigeon(noun, expression, idiom, law, knowledge)
6
break faith(verb, expression, reject, withdraw, abandon)
6
stinker(noun, rotten, dog, sly, creep)
6
spy(noun, grass, sneak, decoy, informer)
6
long-tailed creature(expression, nature, animal, creature, rodent)
6
snake(noun, person, behavior, rotten, bug)
6
talebearer(noun, feature, person, behavior)
6
denounce(verb, attack, turn, criticize, censure)
6
desert(verb, reject, dismiss, withdraw, abandon)
6
informant(noun, law, person, knowledge, source)
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APASmart Define. (2015). rat thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rat/thesaurus/synonyms
ChicagoSmart Define. 2015. "rat thesaurus" https://smartdefine.org/rat/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, rat thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rat/thesaurus/synonyms>.
MLASmart Define. "rat thesaurus" 21 April 2015. Web. 21 September 2026. <https://smartdefine.org/rat/thesaurus/synonyms>