| indispensable(adjective, important, original, serious, capital) | |
| influential(adjective, significant, usual, vital, chief) | |
| intrinsic(adjective, original, essential, basic, absolute) | |
| landmass | |
| large(adjective, significant, vital, imperative) | |
| largest | |
| median(adjective, central) | |
| middle(adjective, central) | |
| midway(adjective, central) | |
| nuclear(adjective, central) | |
| only(adjective, utter, absolute) | |
| overbearing(adjective, top, superior, powerful, prime) | |
| overwhelming | |
| plain | |
| predominate(adjective, top, superior, powerful, prime) | |
| preponderating(usual, universal, general, principal, dominant) | |
| prevalent(adjective, top, superior, powerful, usual) | |
| remarkable(adjective, important, wonderful, exceptional, marvelous) | |
| requisite | |
| sewer(noun, course, means, race, flow) |
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| APA | Smart Define. (2016). main thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/main/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "main thesaurus" https://smartdefine.org/main/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, main thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/main/thesaurus/synonyms>. |
| MLA | Smart Define. "main thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/main/thesaurus/synonyms> |