- Definitions|1
- Thesaurus|147
- Abbreviations|0
| distrusts | |
| guarded(alert, attentive, watchful) | |
| keen(alert, attentive, watchful) | |
| looking for(expression, alert, attentive, watchful) | |
| looking to(expression, alert, attentive, watchful) | |
| note | |
| notice | |
| observant(alert, aware, attentive, wary, watchful) | |
| on alert(expression, alert, attentive, watchful) | |
| on the alert(expression, adjective, alert, aware, attentive) | |
| on the ball(expression, idiom, alert, aware, attentive) | |
| on the job(expression, idiom, alert, attentive, watchful) | |
| on the lookout(expression, idiom, alert, aware, attentive) | |
| on the qui vive(expression, idiom, alert, attentive, watchful) | |
| on toes(expression, alert, attentive, watchful) | |
| open-eyed(alert, attentive, watchful) | |
| precautious | |
| prepared(aware, wary) | |
| sharp(alert, attentive, watchful) | |
| sleepless(alert, attentive, watchful) |
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| APA | Smart Define. (2013). on your guard thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/on_your_guard/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "on your guard thesaurus" https://smartdefine.org/on_your_guard/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2013, on your guard thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/on_your_guard/thesaurus/synonyms>. |
| MLA | Smart Define. "on your guard thesaurus" 28 June 2013. Web. 28 September 2026. <https://smartdefine.org/on_your_guard/thesaurus/synonyms> |