- Definitions|0
- Thesaurus|77
- Abbreviations|2
| indefensible(unwarranted, unjustified, undeserved) | |
| inessential(adjective, useless, unwarranted, unnecessary, pointless) | |
| inexcusable(unwarranted, unjustified, undeserved) | |
| needless(adjective, useless, unwarranted, unnecessary, pointless) | |
| no strings attached(expression, idiom, open, free, voluntary) | |
| nonessential(adjective, useless, unwarranted, unnecessary, pointless) | |
| nonobligatory(open, free, voluntary, elective) | |
| open(free, voluntary, elective) | |
| possible(voluntary, elective) | |
| redundancy | |
| residue | |
| rude(unwarranted, unjustified, undeserved) | |
| unapplied | |
| unbecoming(unwarranted, unjustified, undeserved) | |
| uncalled | |
| uncalled for(expression, useless, unnecessary) | |
| uncompelled(voluntary, elective) | |
| undeserved(unwarranted, unjustified) | |
| undue(unwarranted, unjustified, undeserved) | |
| unemployed |
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| APA | Smart Define. (2015). not required thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/not_required/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "not required thesaurus" https://smartdefine.org/not_required/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, not required thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/not_required/thesaurus/synonyms>. |
| MLA | Smart Define. "not required thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/not_required/thesaurus/synonyms> |