59 entries under adjective topic. ×
| taut(rigid, tight) | |
| tight(calm, close, strong, weak) | |
| active(strong, lively) | |
| diligent | |
| firm(noun, weak, obscure, uncertain) | |
| alert(strong, lively) | |
| rigid(strong, lively) | |
| rigorous | |
| stiff(strong, lively) | |
| strict | |
| tense(tight, stretched) | |
| brisk | |
| careful | |
| compact(unfriendly, condensed) | |
| energetic | |
| attentive | |
| chary | |
| chirpy | |
| circumspect | |
| disciplined(strong, lively) |
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| APA | Smart Define. (2016). slack thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/slack/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "slack thesaurus" https://smartdefine.org/slack/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, slack thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/slack/thesaurus/antonyms>. |
| MLA | Smart Define. "slack thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/slack/thesaurus/antonyms> |