- Definitions|0
- Thesaurus|219
- Abbreviations|0
| old(adjective, continue, customary, hardened, traditional) | |
| persisting(adjective, persistent, continuous, hardened, lasting) | |
| remaining(adjective, persistent, lasting) | |
| aged | |
| immemorial(adjective, old, ancient) | |
| long-established(adjective, existing) | |
| long-term | |
| rooted(fixed, persistent, customary, traditional, lasting) | |
| seasoned | |
| time-honored(adjective, customary) | |
| time-honoured | |
| tough(steady, even, unchanging) | |
| venerable | |
| acknowledged | |
| admitted | |
| age-long | |
| ancient | |
| antique | |
| confirmed(complete, true, fixed, persistent, hardened) | |
| continual(persistent, continuous, lasting, continuing, remaining) |
For more, visit
Long-standing on
Power Thesaurus
| APA | Smart Define. (2015). long-standing thesaurus. Retrieved September 24, 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 24, 2026). |
| Harvard | Smart Define 2015, long-standing thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/long-standing/thesaurus/synonyms>. |
| MLA | Smart Define. "long-standing thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/long-standing/thesaurus/synonyms> |