203 entries under solid topic. ×
| hopeful(strong, reasonable, certain, definite) | |
| immovable(adjective, strong, secure, firm) | |
| in fine feather(expression, adjective, idiom, good, strong) | |
| incorrupt(adjective, good, strong, right, honest) | |
| locked(adjective, strong, firm, short) | |
| material(adjective, strong, hard, physical) | |
| mighty(adjective, strong, tough, fit) | |
| moving(reasonable, realistic, winning, persuasive) | |
| okay(adjective, strong, moderate, proper) | |
| perdurable(calm, strong, tough, substantial) | |
| poised(adjective, calm, strong, secure, firm) | |
| possible(adjective, reasonable, honest, sensible) | |
| powerhouse(strong, tough, fit, healthy) | |
| proved(strong, honest, pure, true) | |
| regular(verb, adjective, correct, appropriate, firm) | |
| reinforced(adjective, strong, tough, heavy) | |
| reserved(adjective, calm, firm, sensible) | |
| rooted(adjective, strong, hard, secure, firm) | |
| sedate(adjective, calm, quiet, reasonable, firm) | |
| self-possessed(adjective, calm, firm, sensible) |
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| APA | Smart Define. (2016). sound thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sound/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sound thesaurus" https://smartdefine.org/sound/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, sound thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sound/thesaurus/synonyms>. |
| MLA | Smart Define. "sound thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/sound/thesaurus/synonyms> |