| factitious(affected, strained, unnatural) | |
| false(affected, strained, unnatural) | |
| fated(obvious, inevitable, inescapable) | |
| fiercely | |
| firmly | |
| forcedly | |
| forcefully | |
| forcibly | |
| give | |
| grudging(affected, strained, unnatural) | |
| hold | |
| impending(obvious, inevitable, inescapable) | |
| imperatorial | |
| implement | |
| incontrovertible | |
| indispensables | |
| indissoluble(necessary, required, obligatory, conclusive) | |
| ineludible(obvious, inevitable, inescapable) | |
| inevasible(obvious, inevitable, inescapable) | |
| inflexible(set, affected, strict, strained, unnatural) |
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| APA | Smart Define. (2015). mandatory thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/mandatory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "mandatory thesaurus" https://smartdefine.org/mandatory/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, mandatory thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/mandatory/thesaurus/synonyms>. |
| MLA | Smart Define. "mandatory thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/mandatory/thesaurus/synonyms> |