- Definitions|0
- Thesaurus|219
- Abbreviations|0
72 entries under adjective topic. ×
| remaining(persistent, lasting) | |
| immemorial(old, ancient) | |
| long-established | |
| seasoned | |
| time-honored | |
| venerable | |
| lifelong(persistent, continuous, hardened, lasting) | |
| longstanding | |
| set(steady, even, hardened, unchanging) | |
| unapologetic(acknowledge, feel, negative, impenitent) | |
| well-founded(steady, even, unchanging) | |
| accepted | |
| acclimated | |
| acclimatized | |
| accustomed | |
| dyed-in-the-wool | |
| eternal | |
| experienced | |
| familiarized | |
| habituated |
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| APA | Smart Define. (2015). long-standing thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/long-standing/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "long-standing thesaurus" https://smartdefine.org/long-standing/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, long-standing thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/long-standing/thesaurus/synonyms>. |
| MLA | Smart Define. "long-standing thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/long-standing/thesaurus/synonyms> |