- Definitions|2
- Thesaurus|217
- Abbreviations|0
45 entries under permanent topic. ×
| incessant(absolute, continuous, endless, immense) | |
| long-term | |
| old(adjective, continue, continuing, recurrent) | |
| timeless(lasting, everlasting, eternal, unending) | |
| unceasing(continuous, lasting, everlasting, perpetual) | |
| undying(adjective, continuous, enduring, lasting) | |
| unending(absolute, endless, enduring, lasting, immense) | |
| unfading(stable, constant, enduring, lasting) | |
| unremitting(continuous, lasting, everlasting, unending) | |
| without end(expression, absolute, endless, lasting, immense) | |
| continued(continuous, lasting, everlasting, uninterrupted) | |
| fixed(tough, stable, sturdy, constant, enduring) | |
| forever(stable, constant, enduring, lasting) | |
| indefinite(lasting, everlasting, unending, undying) | |
| indelible(long-term, lifelong) | |
| indissoluble(strong, everlasting, eternal, long-term) | |
| inexhaustible(absolute, endless, immense, unlimited) | |
| inexpungible(long-term, lifelong) | |
| lifelong(recurrent, perpetual, long-term, returning) | |
| longstanding(fundamental, continuing, operating, recurrent) |
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| APA | Smart Define. (2016). perdurable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/perdurable/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "perdurable thesaurus" https://smartdefine.org/perdurable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, perdurable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/perdurable/thesaurus/synonyms>. |
| MLA | Smart Define. "perdurable thesaurus" 3 March 2016. Web. 22 September 2026. <https://smartdefine.org/perdurable/thesaurus/synonyms> |