| imperishable(adjective, stable, constant, enduring, lasting) | |
| leathery | |
| massive(significant, large, considerable) | |
| old(adjective, continue, permanent, aged, recurrent) | |
| set(verb, adjective, calm, strong, secure) | |
| time-consuming | |
| undestroyable | |
| undying(adjective, enduring, lasting, permanent, recurrent) | |
| ancient(adjective, aged) | |
| continuous(adjective, stable) | |
| evergreen | |
| heavy-duty(adjective, strong, sound, tough, solid) | |
| immovable(adjective, strong, secure, firm, solid) | |
| impervious(verb, adjective, sturdy, enduring) | |
| incessant(adjective, permanent, recurrent, perpetual, long-term) | |
| livelong(adjective, diuturnity) | |
| long | |
| of long duration(expression, idiom, diuturnity) | |
| perduring(adjective, tough, stable, sturdy, constant) | |
| persisting(adjective, permanent, long-term, lifelong) |
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| APA | Smart Define. (2015). durable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/durable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "durable thesaurus" https://smartdefine.org/durable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, durable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/durable/thesaurus/synonyms>. |
| MLA | Smart Define. "durable thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/durable/thesaurus/synonyms> |