- Definitions|2
- Thesaurus|2.3k
- Abbreviations|0
256 entries under adjective topic. ×
| tenacious(tough, firm, true, fixed) | |
| tough(calm, strong, solid, substantial) | |
| unfaltering | |
| unflagging | |
| unrelenting(certain, persistent, constant, reliable) | |
| ageless(fixed, permanent, unchangeable, everlasting) | |
| deep(great, high, remote, long) | |
| existing(verb, established, permanent, existing) | |
| imperishable(constant, enduring, permanent, durable) | |
| indefatigable(continuous, persevering) | |
| ineradicable(fixed, persistent, remaining, chronic) | |
| long-drawn-out(great, high, long, extended) | |
| monumental(great, extraordinary, outstanding, remarkable) | |
| overlong(great, high, long, extended) | |
| protracted(great, deep, high, persistent) | |
| regular(persistent, constant, continuous, established) | |
| relentless(persistent, constant, continuous, endless) | |
| standing(established, permanent) | |
| sturdy(calm, strong, tough, solid) | |
| undeviating |
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| APA | Smart Define. (2016). lasting thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/lasting/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "lasting thesaurus" https://smartdefine.org/lasting/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, lasting thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/lasting/thesaurus/synonyms>. |
| MLA | Smart Define. "lasting thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/lasting/thesaurus/synonyms> |