337 entries under adjective topic. ×
| crucial(great, big, important, significant) | |
| focal(key, chief, focus, foremost) | |
| great(bad, excellent, superior, big) | |
| prevalent(free, top, superior, usual) | |
| ranking | |
| substantial(big, important, significant, large) | |
| best(top, excellent, lead, important) | |
| big(important, significant, substantial, large) | |
| core(lead, importance, head, master) | |
| elemental(body, material, important, significant) | |
| eminent(good, bad, great, excellent) | |
| flagship(lead, head, master, boss) | |
| general(lead, guide, head, usual) | |
| incomparable(bad, tough, top, perfect) | |
| peerless(bad, tough, top, perfect) | |
| starring | |
| topmost(top, excellent, fine, superior) | |
| underlying(important, significant, original, essential) | |
| basal(body, lead, material, important) | |
| base(noun, part, lead, head) |
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| APA | Smart Define. (2016). principal thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/principal/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "principal thesaurus" https://smartdefine.org/principal/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, principal thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/principal/thesaurus/synonyms>. |
| MLA | Smart Define. "principal thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/principal/thesaurus/synonyms> |