- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
| continued(adjective, steady, stable, regular, constant) | |
| eterne(adjective, continue, archaism) | |
| even(verb, adjective, sound, steady, stable) | |
| exhaustless | |
| immemorial(adjective, infinite) | |
| indissoluble(adjective, enduring, permanent, everlasting, eternal) | |
| intermittent(adjective, regular, normal, continuous, lasting) | |
| lengthy(adjective, durable) | |
| long-term(adjective, permanent, lifelong) | |
| measureless(adjective, constant, absolute, abundant, unrestrained) | |
| monotonous(adjective, steady, stable, regular, fixed) | |
| never-ceasing(adjective, present, continuous, lasting, continual) | |
| numberless(adjective, regular, normal, absolute, abundant) | |
| round-the-clock(adjective, continue, continual) | |
| termless(adjective, infinite, infinity) | |
| undeviating(adjective, continuous) | |
| immense(adjective, infinity) | |
| incomprehensible | |
| intransient | |
| livelong(adjective, durable, diuturnity) |
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| APA | Smart Define. (2016). perpetual thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/perpetual/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "perpetual thesaurus" https://smartdefine.org/perpetual/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, perpetual thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/perpetual/thesaurus/synonyms>. |
| MLA | Smart Define. "perpetual thesaurus" 30 March 2016. Web. 27 September 2026. <https://smartdefine.org/perpetual/thesaurus/synonyms> |