What is another word for unsleeping?

Need synonyms for unsleeping? Here's a list of similar words from our thesaurus that you can use instead.

Adjective
Awake and not sleeping
“I have tired myself out with reading, and the fuzziness of my unsleeping brain makes for melancholy.”
Adjective
Observant, vigilant and aware, such as of danger
“An unsleeping eye watches the steam pressure and steadily regulates the firing much more economically and patiently than the most experienced fireman.”
Adjective
Neverending, remaining constantly active
“It was this devotion, unfaltering and unsleeping to the causes he served, that accounts for the immense influence he exercised upon the whole course of events in the last twenty years.”
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