112 entries under significant topic. ×
| durable(adjective, strong, sound, tough, solid) | |
| esteemed(vital, imperative) | |
| eventful(important, historic) | |
| foremost(vital, main, principal, primary) | |
| noticeable(adjective, substantial, large) | |
| pivotal(important, historic) | |
| renowned(adjective, important, famous, familiar) | |
| worthwhile(adjective, strong, solid, important) | |
| chips are down(expression, adjective, idiom, important) | |
| comfortable(open, substantial, large, generous) | |
| critical(heavy, important, substantial, valuable) | |
| decisive(important, substantial, valuable, vital) | |
| determining(substantial, valuable, vital, imperative) | |
| doozie(important, substantial, large) | |
| dynamite(important, substantial, large) | |
| earth-shattering(important, historic) | |
| epochal(important, historic) | |
| exigent(substantial, valuable, vital, imperative) | |
| extraordinary(adjective, strong, solid, important) | |
| far-reaching(important, substantial, large, grand) |
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| APA | Smart Define. (2016). big thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/big/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "big thesaurus" https://smartdefine.org/big/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, big thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/big/thesaurus/synonyms>. |
| MLA | Smart Define. "big thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/big/thesaurus/synonyms> |