- Definitions|0
- Thesaurus|36
- Abbreviations|0
| rest assured | |
| bet on | |
| gamble on | |
| go without saying(expression, idiom) | |
| know | |
| assure(verify, ensure) | |
| assured | |
| be | |
| cinch(verb, verify, ensure) | |
| clinch(verb, see, understand, identify, distinguish) | |
| complete(verb, verify, ensure) | |
| ensure(verb, verify) | |
| have a lock on(verb, expression, idiom, verify, ensure) | |
| ice(verb, verify, ensure) | |
| insure(verb, verify, ensure) | |
| lock(verb, verify, ensure) | |
| lock on(verb, expression, verify, ensure) | |
| lock up(verb, expression, verify, ensure) | |
| make certain(verb, expression, verify, ensure) | |
| make sure(verb, expression, verify, ensure) |
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| APA | Smart Define. (2015). know for certain thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/know_for_certain/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "know for certain thesaurus" https://smartdefine.org/know_for_certain/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, know for certain thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/know_for_certain/thesaurus/synonyms>. |
| MLA | Smart Define. "know for certain thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/know_for_certain/thesaurus/synonyms> |