164 entries under significant topic. ×
| big-deal(large, considerable) | |
| binding(adjective, essential, basic, vital) | |
| bottom line(expression, important, essential, basic) | |
| compulsory(adjective, essential, basic, vital) | |
| de rigueur(expression, adjective, essential, basic) | |
| durable(large, considerable) | |
| exalted(adjective, fine, important, outstanding) | |
| expedient(adjective, essential, basic, vital) | |
| firm(large, considerable) | |
| generous(large, considerable) | |
| goodly(large, considerable) | |
| hefty(large, considerable) | |
| heroic(adjective, fine, important, grand) | |
| high-minded(adjective, fine, important, grand) | |
| highly regarded(expression, adjective, fine, important) | |
| honorable(adjective, fine, important, grand) | |
| idealistic(adjective, fine, important, grand) | |
| incumbent on(expression, adjective, essential, basic) | |
| magnanimous(adjective, fine, important, grand) | |
| mandatory(adjective, essential, basic, vital) |
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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> |