- Definitions|1
- Thesaurus|162
- Abbreviations|0
| undeviating(adjective, perseverance) | |
| unwearied | |
| acute(keen, anxious, alert, careful, cautious) | |
| agog(keen, anxious, alert, careful, cautious) | |
| all ears(expression, adjective, alert, careful, cautious) | |
| anxious(keen, alert, careful, attentive, watchful) | |
| ardent | |
| aware(adjective, keen, alert, careful, attentive) | |
| bright | |
| businesslike | |
| cautious(adjective, keen, alert, careful, attentive) | |
| chary(adjective, alert, careful, cautious, attentive) | |
| circumspect(adjective, keen, alert, careful, cautious) | |
| continuing | |
| dogged | |
| enduring | |
| energetic | |
| faithful | |
| fervent | |
| glued(adjective, alert, careful, cautious, attentive) |
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| APA | Smart Define. (2015). unsleeping thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unsleeping/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unsleeping thesaurus" https://smartdefine.org/unsleeping/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, unsleeping thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unsleeping/thesaurus/synonyms>. |
| MLA | Smart Define. "unsleeping thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/unsleeping/thesaurus/synonyms> |