- Definitions|1
- Thesaurus|293
- Abbreviations|0
| lasting(adjective, permanent, recurrent, perpetual) | |
| eternal(permanent, recurrent, perpetual, long-term) | |
| everlasting(permanent, recurrent, perpetual, long-term) | |
| forever(permanent, long-term, lifelong, diurnal) | |
| in for the long haul(expression, idiom, permanent, long-term) | |
| inexpungible(permanent, long-term, lifelong, diurnal) | |
| long-term(permanent, lifelong, diurnal, ceaselessly) | |
| permanent(recurrent, perpetual, long-term, lifelong) | |
| till the cows come home(expression, idiom, permanent, long-term) |
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| APA | Smart Define. (2013). longstanding thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/longstanding/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "longstanding thesaurus" https://smartdefine.org/longstanding/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2013, longstanding thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/longstanding/thesaurus/synonyms>. |
| MLA | Smart Define. "longstanding thesaurus" 27 June 2013. Web. 24 September 2026. <https://smartdefine.org/longstanding/thesaurus/synonyms> |