- Definitions|2
- Thesaurus|914
- Abbreviations|0
| imperceptible(adjective, hard, faint, obvious, invisible) | |
| invisible | |
| obscure(adjective, invisible, understood) | |
| unrelatable | |
| unnoticeable(adjective, invisible) | |
| vague(adjective, invisible) | |
| impalpable(adjective, unsubstantial, intangible) | |
| indistinct(adjective, invisible) | |
| camouflaged | |
| in mind | |
| ambiguous(adjective, invisible) | |
| disguised | |
| inaudible | |
| inconspicuous | |
| indiscernible | |
| indistinguishable | |
| intangible(adjective, indefinite, obscured) | |
| silent(adjective, invisible) | |
| undetectable | |
| unperceivable |
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| APA | Smart Define. (2015). perceptible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/perceptible/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "perceptible thesaurus" https://smartdefine.org/perceptible/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, perceptible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/perceptible/thesaurus/antonyms>. |
| MLA | Smart Define. "perceptible thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/perceptible/thesaurus/antonyms> |