- Definitions|1
- Thesaurus|230
- Abbreviations|0
| sleepless(adjective, careful, restless, disturbed, awake) | |
| sleepless person(noun, expression, idiom) | |
| wakeful(adjective, alert, restless) | |
| restless | |
| awake(adjective, careful, restless, disturbed, sleepless) | |
| vigil | |
| watchful(adjective, careful, restless, disturbed, awake) | |
| insomnia | |
| unsleeping(adjective, wakeful) | |
| insomnious(careful, restless, disturbed, alive, sleepless) | |
| waking(adjective, careful, restless, disturbed, alive) | |
| alert(adjective, restless, disturbed, awake, sleepless) | |
| attentive(adjective, careful, restless, disturbed, awake) | |
| insomnolency | |
| restive | |
| restlessness | |
| sleeplessness | |
| tossing and turning(expression, idiom) | |
| wakefulness | |
| alive(careful, restless, disturbed, sleepless, wakeful) |
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| APA | Smart Define. (2015). insomniac thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/insomniac/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "insomniac thesaurus" https://smartdefine.org/insomniac/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, insomniac thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/insomniac/thesaurus/synonyms>. |
| MLA | Smart Define. "insomniac thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/insomniac/thesaurus/synonyms> |