107 entries under challenge topic. ×
| impugn(verb, dispute, deny, question) | |
| call in question(verb, expression, idiom, oppose, dispute) | |
| deny(verb, decline, reject, dispute) | |
| difficulty(noun, fix, anxiety, issue, dislike) | |
| oppose(verb, decline, reject, dispute, refuse) | |
| be dubious(verb, expression, idiom, dispute) | |
| be uncertain(verb, dispute, question, suspect) | |
| misgive(verb, dispute, question, suspect) | |
| smell a rat(verb, expression, idiom, dispute) | |
| wonder at(verb, expression, phrasal verb, dispute) | |
| debate(noun, verb, stop, oppose, dispute) | |
| demurral(noun, delay, difficulty, anxiety, weakness) | |
| protest(noun, verb, difficulty, issue, dislike) | |
| rejection(noun, anxiety, dislike, opposition) | |
| surmise(noun, verb, consider, dispute) | |
| confute(verb, deny, question, contest) | |
| contradict(verb, decline, reject, oppose, dispute) | |
| dislike(noun, disagreement, opposition, protest) | |
| gainsay(verb, decline, reject, dispute, refuse) | |
| imagine(verb, consider, dispute, assume) |
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| APA | Smart Define. (2016). doubt thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/doubt/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "doubt thesaurus" https://smartdefine.org/doubt/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, doubt thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/doubt/thesaurus/synonyms>. |
| MLA | Smart Define. "doubt thesaurus" 2 March 2016. Web. 23 September 2026. <https://smartdefine.org/doubt/thesaurus/synonyms> |