30 entries under adjective topic. ×
| involuntary(intentional, automatic) | |
| unwilling | |
| compulsory | |
| forced(verb, involuntary) | |
| unintentional | |
| obligatory(essential, required, involuntary, optional) | |
| unconscious | |
| necessary(unimportant, trivial, inevitable) | |
| automatic | |
| instinctive | |
| mandatory(necessary, required) | |
| imperative(necessary, authoritative) | |
| binding | |
| compulsive | |
| essential | |
| forcible | |
| important(dull, weak, little) | |
| indispensable | |
| mechanical | |
| prerequisite(secondary, necessary) |
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| APA | Smart Define. (2015). voluntary thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/voluntary/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "voluntary thesaurus" https://smartdefine.org/voluntary/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, voluntary thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/voluntary/thesaurus/antonyms>. |
| MLA | Smart Define. "voluntary thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/voluntary/thesaurus/antonyms> |