113 entries under adjective topic. ×
| eterne(change, archaism) | |
| evergreen(endless, everlasting, eternal, perpetual) | |
| forever(vast, lasting, permanent, everlasting) | |
| indefinite(lasting, permanent, everlasting, eternal) | |
| nonstop | |
| ongoing | |
| round-the-clock(continue, continual) | |
| unbounded | |
| unfailing | |
| uninterrupted(continue, steady, regular, constant) | |
| without end(expression, vast, lasting, permanent) | |
| immeasurable(endless, infinite, boundless, incessant) | |
| changeless | |
| chronic | |
| continued(steady, stable, regular, lasting) | |
| illimitable(infinite, eternal) | |
| immediate | |
| incalculable | |
| inexhaustible | |
| infelicitous |
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| APA | Smart Define. (2016). timeless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/timeless/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "timeless thesaurus" https://smartdefine.org/timeless/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, timeless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/timeless/thesaurus/synonyms>. |
| MLA | Smart Define. "timeless thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/timeless/thesaurus/synonyms> |