| lasting(adjective, vast, permanent, lifelong, diurnal) | |
| enduring(adjective, lasting, permanent, lifelong) | |
| permanent(adjective, vast, lasting, lifelong, diurnal) | |
| durable(adjective, lasting, permanent, lifelong) | |
| eternal(adjective, vast, permanent, lifelong, diurnal) | |
| everlasting(adjective, vast, permanent, lifelong, diurnal) | |
| long-range(adjective, advance, view, success, perhaps) | |
| continuing(adjective, lasting, permanent, lifelong) | |
| perpetual(adjective, permanent, lifelong) | |
| undying(adjective, permanent, lifelong) | |
| long-run | |
| chronic | |
| inveterate | |
| long | |
| long-lived | |
| semipermanent | |
| abiding(lasting, permanent, lifelong) | |
| aged | |
| constant(permanent, lifelong) | |
| deep-rooted(adjective, permanent, lifelong) |
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| APA | Smart Define. (2016). long-term thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/long-term/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "long-term thesaurus" https://smartdefine.org/long-term/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, long-term thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/long-term/thesaurus/synonyms>. |
| MLA | Smart Define. "long-term thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/long-term/thesaurus/synonyms> |