- Definitions|2
- Thesaurus|1.1k
- Abbreviations|0
| permanent(adjective, constant, lasting, temporary) | |
| eternal(adjective, pause, limited, endless, lasting) | |
| endless | |
| lasting(adjective, temporary) | |
| long(adjective, weak, low, excessive, lasting) | |
| ceaseless | |
| everlasting(adjective, lasting) | |
| constant(adjective, sympathetic, broken, finished, occasional) | |
| perpetual(adjective, limited, irregular, lasting, continual) | |
| enduring(adjective, lasting) | |
| timeless | |
| long-lived(adjective, lasting) | |
| undying | |
| unending(irregular, broken, finite) | |
| chronic | |
| deathless | |
| immortal(adjective, imperishable) | |
| interminable(adjective, limited, lasting, finite) | |
| changeless | |
| continuing |
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| APA | Smart Define. (2016). ephemeral thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/ephemeral/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "ephemeral thesaurus" https://smartdefine.org/ephemeral/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, ephemeral thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/ephemeral/thesaurus/antonyms>. |
| MLA | Smart Define. "ephemeral thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/ephemeral/thesaurus/antonyms> |