6
distrust(verb, dispute, challenge, doubt, question)
5
suspect(verb, dispute, challenge, think, doubt)
4
doubt(verb, hold, consider, dispute, challenge)
4
mistrust(verb, dispute, challenge, think, doubt)
4
question(verb, dispute, challenge, doubt, discredit)
3
misdoubt(verb, dispute, challenge, doubt, question)
3
query(verb, dispute, challenge, doubt, question)
3
scruple(verb, dispute, challenge, doubt, question)
2
be apprehensive of(verb, dispute, challenge, doubt, question)
2
be curious(verb, dispute, challenge, doubt, question)
2
be dubious(verb, dispute, challenge, doubt, question)
2
be in a quandary(verb, dispute, challenge, doubt, question)
2
be puzzled(verb, dispute, challenge, doubt, question)
2
be suspicious of(verb, expression, idiom, doubt, disbelieve)
2
be uncertain(verb, dispute, challenge, doubt, question)
2
be undetermined(verb, dispute, challenge, doubt, question)
2
call in question(verb, expression, idiom, dispute, challenge)
2
challenge(verb, dispute, doubt, question, hesitate)
2
demur(verb, dispute, challenge, doubt, question)
2
disbelieve(verb, dispute, challenge, think, doubt)
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APASmart Define. (2015). smell a rat thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/smell_a_rat/thesaurus/synonyms
ChicagoSmart Define. 2015. "smell a rat thesaurus" https://smartdefine.org/smell_a_rat/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, smell a rat thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/smell_a_rat/thesaurus/synonyms>.
MLASmart Define. "smell a rat thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/smell_a_rat/thesaurus/synonyms>