- Definitions|1
- Thesaurus|519
- Abbreviations|0
23 entries under adverb topic. ×
| doubtfully | |
| possibly | |
| dubiously | |
| unclearly | |
| questionably | |
| uncertainly | |
| indefinite(adjective, unmistakably, authentically, doubtfully) | |
| undecidedly | |
| ambiguously | |
| apocryphally | |
| apprehensively | |
| bleakly | |
| contentiously | |
| openly | |
| reservedly | |
| shiftily | |
| tentatively | |
| uncertain(unmistakably, perceptibly, doubtfully, palpably) | |
| undeterminedly | |
| unsettledly |
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| APA | Smart Define. (2015). undoubtedly thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/undoubtedly/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "undoubtedly thesaurus" https://smartdefine.org/undoubtedly/thesaurus/antonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, undoubtedly thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/undoubtedly/thesaurus/antonyms>. |
| MLA | Smart Define. "undoubtedly thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/undoubtedly/thesaurus/antonyms> |