- Definitions|1
- Thesaurus|337
- Abbreviations|0
20 entries under hardened topic. ×
| long-lived(adjective, continue, familiar, established) | |
| long-standing(adjective, continue, existing, confirmed) | |
| continuing(adjective, continue, familiar, established) | |
| inveterate(adjective, familiar, established, confirmed) | |
| lifelong(adjective, familiar, established, lasting) | |
| old(adjective, continue, familiar, established) | |
| fixed(adjective, tough, stable, sturdy, constant) | |
| persisting(adjective, enduring, permanent, confirmed) | |
| deep-rooted(adjective, permanent, confirmed, chronic) | |
| ineradicable(adjective, confirmed, chronic) | |
| set(stable, constant, enduring, lasting) | |
| confirmed(adjective, chronic) | |
| deep-seated(adjective, confirmed, chronic) | |
| habitual(adjective, confirmed, chronic) | |
| inbred(adjective, confirmed, chronic) | |
| incurable(adjective, confirmed, chronic) | |
| ingrained(adjective, confirmed, chronic) | |
| obstinate(adjective, confirmed, chronic) | |
| settled(adjective, confirmed, chronic) | |
| usual(adjective, confirmed, chronic) |
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| APA | Smart Define. (2015). long-lasting thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/long-lasting/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "long-lasting thesaurus" https://smartdefine.org/long-lasting/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, long-lasting thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/long-lasting/thesaurus/synonyms>. |
| MLA | Smart Define. "long-lasting thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/long-lasting/thesaurus/synonyms> |