| ideal(adjective, unimportant) | |
| abstract(adjective, unimportant, real, theoretical, conceptual) | |
| flexible(adjective, unimportant) | |
| intangible(adjective, unimportant) | |
| dream(noun, conception, nightmare, excitant, ideality) | |
| metaphysical(adjective, physical, obvious, presence) | |
| conceptual | |
| immaterial(adjective, unimportant) | |
| conjectural | |
| ever-changing | |
| feeling(noun, apathy, conception, excitant, ideality) | |
| hypothetical | |
| insubstantial | |
| liquid | |
| pliable(adjective, unimportant) | |
| bending(verb, adjective, unimportant) | |
| indeterminate | |
| soft | |
| vibe(noun, thing, conception, excitant, ideality) | |
| image(noun, concept, original, conception, excitant) |
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| APA | Smart Define. (2016). concrete thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/concrete/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "concrete thesaurus" https://smartdefine.org/concrete/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, concrete thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/concrete/thesaurus/antonyms>. |
| MLA | Smart Define. "concrete thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/concrete/thesaurus/antonyms> |