Ranked by relevance and common usage.
Keep "unsleeping" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
If two options seem close, choose the one that best matches the audience and purpose of the sentence.
Choose a synonym only if it keeps the core idea of "unsleeping" intact in the sentence you are editing.
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
After choosing a replacement for "unsleeping", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.
If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "unsleeping" or choose a simpler alternative from the closest-match group.
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
6 total sentences available.
All that night Saxon lay, unsleeping, without taking off her clothes, and when she arose in the morning and washed her face and dressed her hair she was aware of a strange numbness, of a feeling of constriction about her head as if it were bound by a heavy band of iron.
Source: wiktionary
Did you fixedly gaze, too, upon that ribbed and dented brow; there also, you would see still stranger foot-prints—the foot-prints of his one unsleeping, ever-pacing thought.
Source: wiktionary
Captain Kennedy, who is the Commodore of the fleet, and so always commands the newest and best ship of the line, is an admirable seaman, with a quick eye for everything, always on deck at critical moments, watching with unsleeping vigilance over the safety of all on board.
Source: wiktionary
An unsleeping eye watches the steam pressure and steadily regulates the firing much more economically and patiently than the most experienced fireman.
Source: wiktionary
Showing 4 of 6 available sentences.
Closest matches include agile, alert, alive, ardent, assiduous.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.