215 entries under adjective topic. ×
| inexpungible(vast, long-term, lifelong, diurnal) | |
| inextirpable | |
| ingrained | |
| irreparable(unalterable, irretrievable) | |
| lengthy | |
| like the Rock of Gibralter(expression, idiom, steady, stable) | |
| long-range | |
| long haul | |
| monochrome(dull, steady, stable, regular) | |
| monolithic | |
| monophonic(dull, steady, stable, regular) | |
| normal | |
| of a piece(expression, idiom, steady, stable) | |
| outstanding | |
| prodigious | |
| prominent | |
| regularized(dull, steady, stable, regular) | |
| round-the-clock(constant, continuous, continual, incessant) | |
| significant | |
| solid as rock(expression, idiom, steady, stable) |
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| APA | Smart Define. (2016). permanent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/permanent/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "permanent thesaurus" https://smartdefine.org/permanent/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, permanent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/permanent/thesaurus/synonyms>. |
| MLA | Smart Define. "permanent thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/permanent/thesaurus/synonyms> |