50 entries under obligatory topic. ×
| enforced(affected, strained, unnatural, required) | |
| forced(affected, strained, unnatural, required) | |
| fundamental(adjective, significant, essential, basic, vital) | |
| momentous(adjective, significant, essential, basic, vital) | |
| paramount(adjective, significant, essential, basic, vital) | |
| prime(adjective, significant, essential, basic, vital) | |
| principal(adjective, significant, essential, basic, vital) | |
| significant(adjective, essential, basic, vital, effective) | |
| urgent(adjective, significant, essential, basic, vital) | |
| vital(adjective, significant, essential, basic, required) |
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| APA | Smart Define. (2015). binding thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/binding/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "binding thesaurus" https://smartdefine.org/binding/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, binding thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/binding/thesaurus/synonyms>. |
| MLA | Smart Define. "binding thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/binding/thesaurus/synonyms> |