Insomnious
Sleepless and insomnious are semantically related. in alert topic. In some cases you can use "Sleepless" instead an adjective "Insomnious", when it comes to topics like wakeful.
Sleepless
Sleepless adjective - Not sleeping or able to sleep.
Insomnious and sleepless are semantically related. You can use "Insomnious" instead an adjective "Sleepless".
Mutual synonyms
Related pairs
- awake and insomnious
- awake and sleepless
- alert and insomnious
- alert and sleepless
- attentive and insomnious
- attentive and sleepless
- restless and insomnious
- restless and sleepless
- observant and insomnious
- observant and sleepless
- watchful and insomnious
- watchful and sleepless
- vigilant and insomnious
- vigilant and sleepless
Cite this Source
Sleepless and Insomnious. (2016). Retrieved 2026, July 30, from https://thesaurus.plus/related/insomnious/sleepless
Insomnious & Sleepless. N.p., 2016. Web. 30 Jul. 2026. <https://thesaurus.plus/related/insomnious/sleepless>.
Sleepless or Insomnious. 2016. Accessed July 30, 2026. https://thesaurus.plus/related/insomnious/sleepless.
Google Ngram Viewer shows how "insomnious" and "sleepless" have occurred on timeline