164 entries under significant topic. ×
| notable(noun, adjective, great, extraordinary, big) | |
| primitive(adjective, body, material, important) | |
| required(adjective, important, serious, capital) | |
| serious(great, big, important, substantial) | |
| superlative(adjective, bad, great, tough, top) | |
| urgent(adjective, great, big, substantial) | |
| weighty(great, big, important, substantial) | |
| august(adjective, fine, important, grand) | |
| axiological(adjective, important, original, essential) | |
| axiomatic(important, original, basic, vital) | |
| bottom(adjective, important, original, essential) | |
| bottom-line(adjective, important, original, essential) | |
| celebrated(adjective, bad, great, excellent, superior) | |
| decisive(adjective, great, big, important) | |
| determining(big, substantial, valuable, vital) | |
| earnest(big, substantial, valuable, vital) | |
| esteemed(vital, imperative) | |
| exceptional(adjective, bad, great, excellent, extraordinary) | |
| exigent(adjective, big, substantial, large) | |
| extensive(big, substantial, large, valuable) |
For more, visit
Principal on
Power Thesaurus
| 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> |