| smack-dab(adverb, right, just, absolutely, exactly) | |
| solve | |
| span | |
| spot | |
| stand-up(adjective, straight, upright, steep, erect) | |
| straight-up(adjective, straight, upright, steep, erect) | |
| straight up(verb, expression, adjective, phrasal verb, vertical) | |
| strictly(just, absolutely, exactly, quite, correctly) | |
| stroke(verb, check, mark, determine, fit) | |
| tailor(verb, check, mark, determine, fit) | |
| take account(expression, check, mark, determine, fit) | |
| thorough | |
| thoroughgoing | |
| time(verb, check, mark, determine, fit) | |
| total | |
| truly | |
| unbroken(adjective, direct, smooth, right, flat) | |
| unconditional | |
| undeviatingly(adverb, right, exactly, precisely, correctly) | |
| unvarying(adjective, direct, smooth, right, flat) |
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| APA | Smart Define. (2015). plumb thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/plumb/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "plumb thesaurus" https://smartdefine.org/plumb/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, plumb thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/plumb/thesaurus/synonyms>. |
| MLA | Smart Define. "plumb thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/plumb/thesaurus/synonyms> |