| granting that(adjective, assuming, supposing) | |
| hence(conjunction, also, besides, despite, however) | |
| howbeit(conjunction, also, besides, despite, however) | |
| if and only if | |
| if it follows that | |
| if so be(expression, idiom, circumstance) | |
| in the event that | |
| in these circumstances(adjective, assuming, supposing) | |
| let us suppose(adjective, assuming, supposing) | |
| like | |
| not but(conjunction, also, besides, despite, however) | |
| not but that(conjunction, also, besides, despite, however) | |
| not but what(conjunction, also, besides, despite, however) | |
| notwithstanding(conjunction, also, besides, despite, however) | |
| on condition(expression, idiom, conjunction) | |
| on second thoughts(conjunction, also, besides, despite, however) | |
| once | |
| or | |
| peradventure | |
| postulate |
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| APA | Smart Define. (2016). if thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/if/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "if thesaurus" https://smartdefine.org/if/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, if thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/if/thesaurus/synonyms>. |
| MLA | Smart Define. "if thesaurus" 30 March 2016. Web. 21 September 2026. <https://smartdefine.org/if/thesaurus/synonyms> |