144 entries under doubt topic. ×

40
question(noun, verb, get, go, charge)
21
ask(verb, get, go, present, cause)
19
inquire(verb, get, go, check, promote)
17
interrogate(verb, check, examine, measure, challenge)
16
quiz(noun, verb, check, examine, measure)
15
examine(verb, challenge, demand, request)
12
challenge(verb, go, charge, promote, oppose)
12
dispute(noun, verb, get, oppose, provoke)
10
catechize(verb, check, sound, examine, measure)
10
enquire(verb, examine, challenge, seek)
10
problem(noun, anxiety, challenge, demand, request)
8
mistrust(noun, verb, trouble, oppose, concern)
8
uncertainty(noun, anxiety, demand, request)
7
distrust(noun, verb, trouble, oppose, concern)
7
suspect(verb, dispute, challenge, question)
6
suspicion(noun, verb, trouble, oppose, concern)
5
call in question(expression, idiom, dispute, challenge)
4
be curious(verb, dispute, challenge, think)
4
concern(noun, trouble, anxiety, confusion, demand)
4
impeach(verb, get, charge, oppose, dispute)
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APASmart Define. (2016). query thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/query/thesaurus/synonyms
ChicagoSmart Define. 2016. "query thesaurus" https://smartdefine.org/query/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, query thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/query/thesaurus/synonyms>.
MLASmart Define. "query thesaurus" 17 February 2016. Web. 20 September 2026. <https://smartdefine.org/query/thesaurus/synonyms>