- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
218 entries under adjective topic. ×
| immemorial | |
| indissoluble(enduring, permanent, everlasting, eternal) | |
| intermittent(regular, normal, continuous, lasting) | |
| lengthy | |
| long-term(permanent, lifelong) | |
| measureless(constant, absolute, abundant, unrestrained) | |
| monotonous(steady, stable, regular, fixed) | |
| never-ceasing(present, continuous, lasting, continual) | |
| numberless(regular, normal, absolute, abundant) | |
| round-the-clock(continue, continual) | |
| termless(infinite, infinity) | |
| undeviating | |
| immense | |
| livelong(durable, diuturnity) | |
| long-lasting(familiar, stable, constant, established) | |
| old(familiar, established, traditional, permanent) | |
| persisting(determined, steady, stable, persistent) | |
| prolonged(steady, stable, regular, constant) | |
| straight(moral, continuous, principled, continual) | |
| unchanged(wild, original, fixed, basic) |
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| APA | Smart Define. (2016). perpetual thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/perpetual/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "perpetual thesaurus" https://smartdefine.org/perpetual/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, perpetual thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/perpetual/thesaurus/synonyms>. |
| MLA | Smart Define. "perpetual thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/perpetual/thesaurus/synonyms> |