206 entries under keen topic. ×
| watchful(adjective, feature, characteristic, understanding) | |
| attentive(adjective, feature, characteristic, understanding) | |
| vigilant(adjective, activity, feature, characteristic, understanding) | |
| observant(adjective, feature, characteristic, understanding, strong) | |
| sharp(adjective, activity, understanding, strong, open) | |
| quick(adjective, activity, understanding, pleasant) | |
| active(adjective, adverb, activity, good, clear) | |
| wary(adjective, sensible, deliberate, lively) | |
| cautious(adjective, adverb, care, sensible) | |
| aware(adjective, feature, characteristic, understanding, open) | |
| careful(adjective, sensible, excited, lively) | |
| awake(verb, adjective, activity, understanding, open) | |
| circumspect(adjective, sensible, deliberate, lively) | |
| lively(adjective, good, clear, strong, moving) | |
| brisk(adjective, moving, pleasant, sharp) | |
| agile(adjective, sharp, smart, bright) | |
| mindful(adjective, understanding, sensible, certain) | |
| perceptive(adjective, understanding, strong, open) | |
| alive(adjective, adverb, open, sharp) | |
| fresh(adjective, energetic, person, energy) |
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| APA | Smart Define. (2016). alert thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/alert/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "alert thesaurus" https://smartdefine.org/alert/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, alert thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/alert/thesaurus/synonyms>. |
| MLA | Smart Define. "alert thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/alert/thesaurus/synonyms> |