102 entries under constant topic. ×
| unfading(enduring, lasting, perpetual) | |
| ardent(adjective, firm, solid, true, fixed) | |
| brick-wall(adjective, firm, solid, steady, fixed) | |
| forever(enduring, lasting, permanent, perpetual) | |
| fortified(adjective, strong, firm, solid, true) | |
| habitual(adjective, dull, steady, regular, fixed) | |
| imperishable(adjective, enduring, lasting, perpetual) | |
| in for the long haul(expression, idiom, enduring, lasting) | |
| indelible(firm, true, fixed, steadfast) | |
| nailed(adjective, strong, secure, firm, solid) | |
| plain(adjective, calm, quiet, smooth, soft) | |
| solid as a rock(expression, adjective, idiom, strong, firm) | |
| staying put(expression, adjective, steady, fixed, even) | |
| adherent(firm, true, fixed, steadfast) | |
| committed(adjective, firm, steady, resolute, persistent) | |
| diurnal(enduring, lasting, perpetual) | |
| for keeps(expression, enduring, lasting, perpetual) | |
| forever and a day(expression, idiom, enduring, lasting) | |
| glued(firm, true, fixed, steadfast) | |
| held(firm, true, fixed, steadfast) |
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| APA | Smart Define. (2015). stable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "stable thesaurus" https://smartdefine.org/stable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, stable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stable/thesaurus/synonyms>. |
| MLA | Smart Define. "stable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/stable/thesaurus/synonyms> |