76 entries under noun topic. ×
| advocate | |
| back-up(substitute, replacement, opportunity, substitution) | |
| backer | |
| block | |
| champ | |
| factory | |
| huis clos | |
| la derobee | |
| la sourdine | |
| midnight | |
| nuclear submarine | |
| offspring | |
| shim | |
| support | |
| underwater craft | |
| underwater robot |
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| APA | Smart Define. (2016). sub thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sub/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sub thesaurus" https://smartdefine.org/sub/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, sub thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sub/thesaurus/synonyms>. |
| MLA | Smart Define. "sub thesaurus" 18 February 2016. Web. 27 September 2026. <https://smartdefine.org/sub/thesaurus/synonyms> |