- Definitions|1
- Thesaurus|765
- Abbreviations|0
37 entries under unquestionable topic. ×
| certain(adjective, correct, firm, solid, physical) | |
| indubitable(adjective, clear, sound, correct, right) | |
| sure(adjective, clear, sound, correct, firm) | |
| undeniable(adjective, clear, correct, right, firm) | |
| irrefutable(adjective, clear, flat, firm, solid) | |
| genuine(adjective, clear, sound, correct, right) | |
| real(adjective, clear, sound, correct, right) | |
| true(adjective, clear, sound, correct, right) | |
| definite(adjective, clear, firm, solid, certain) | |
| clear(adjective, hard, sound, firm, plain) | |
| absolute(adjective, clear, correct, certain, real) | |
| evident(adjective, clear, material, certain, definite) | |
| patent(adjective, sound, certain, true, definite) | |
| decided(adjective, solid, certain, straightforward, definite) | |
| firm(noun, adjective, clear, hard, sound) | |
| fixed(adjective, clear, sound, firm, plain) | |
| set(adjective, clear, sound, firm, solid) | |
| manifest(adjective, sound, certain, true, definite) | |
| unerring(adjective, clear, sound, correct, right) | |
| authoritative(adjective, clear, sound, correct, right) |
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| APA | Smart Define. (2015). undoubted thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/undoubted/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "undoubted thesaurus" https://smartdefine.org/undoubted/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, undoubted thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/undoubted/thesaurus/synonyms>. |
| MLA | Smart Define. "undoubted thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/undoubted/thesaurus/synonyms> |