167 entries under stable topic. ×
| intense(adjective, complete, firm, total, solid) | |
| iron(adjective, mean, strong, hard, tough) | |
| like the Rock of Gibralter(expression, adjective, idiom, steady) | |
| locked(verb, adjective, strong, sound, secure) | |
| monochrome(adjective, dull, steady, regular) | |
| monophonic(adjective, dull, steady, regular) | |
| monotonous(adjective, dull, set, cold, steady) | |
| nailed(verb, adjective, strong, secure, solid) | |
| nonstop(adjective, dull, steady, regular) | |
| of a piece(expression, adjective, idiom, steady) | |
| pacific(adjective, calm, quiet, smooth, shy) | |
| perdurable(tough, sturdy, constant, enduring) | |
| perduring(tough, sturdy, constant, enduring) | |
| perennial(adjective, persistent, constant, hardened) | |
| placid(adjective, calm, quiet, smooth, shy) | |
| reserved(adjective, firm, solid, shy) | |
| restful(adjective, calm, quiet, smooth, shy) | |
| robust(adjective, strong, sound, secure, tough) | |
| safe(adjective, clear, strong, hard, sound) | |
| safe and sound(expression, adjective, idiom, strong, solid) |
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| APA | Smart Define. (2016). fixed thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, fixed thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>. |
| MLA | Smart Define. "fixed thesaurus" 16 March 2016. Web. 21 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms> |