166 entries under firm topic. ×
| plain(adjective, clear, hard, sound, flat) | |
| poised(adjective, calm, strong, secure) | |
| relentless(adjective, strong, tough, determined) | |
| sensible(adjective, understanding, reasonable, keen) | |
| sober(adjective, solid, energetic, vigorous) | |
| stalwart(adjective, calm, strong, tough) | |
| tenacious(adjective, strong, flat, solid) | |
| tough(adjective, calm, strong, solid) | |
| true-blue(adjective, good, close, strong, correct) | |
| upright(adjective, close, strong, correct) | |
| adamant(adjective, strong, tough, flat) | |
| affectionate(adjective, close, correct, honest) | |
| allegiant(adjective, close, correct, honest) | |
| anchored(adjective, calm, strong, secure) | |
| ardent(adjective, close, correct, honest) | |
| attached(adjective, close, correct, honest) | |
| balanced(adjective, calm, strong, secure, easy) | |
| behind one(expression, adjective, close, correct) | |
| brick-wall(adjective, calm, strong, secure) | |
| calm(adjective, quiet, strong, cool, secure) |
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| APA | Smart Define. (2016). sure thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sure/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sure thesaurus" https://smartdefine.org/sure/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, sure thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sure/thesaurus/synonyms>. |
| MLA | Smart Define. "sure thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/sure/thesaurus/synonyms> |