unsleeping

• Even then she fancied an eye upon her--an unsleeping, unblinking eye; the unwearying vigilance of justice on the watch for a criminal. —  Cobwebs and Cables
• The scarred remains of buildings were also less frequent, though here and there an inexplicable mound of slag, half overgrown like an ancient, impoverished barrow, rose to recall the unsleeping dead that still walked there Sylviana was soon pale and exhausted, and Kalus could no longer indulge her almost distracted urge to keep moving. —  The Mantooth
• By timely courage, on the spot, the threat to India had been staved off: but it was there still--sinister, unsleeping, virtually unchecked Scotched--not killed.' —  Far to Seek A Romance of England and India
• Tireless, unsleeping, all providing, all accomplishing, omniscient,--this was what made Drusus look upon his general as a being raised up by the Fates, to go up and down the world, destroying here and building there. —  A Friend of Caesar A Tale of the Fall of the Roman Republic. Time, 50-47 B.C.
• Was Kish Taka still unsleeping, patient, relentless on Courtot's trail? —  The Desert Valley

Roget's II: The New Thesaurus

Used in the Same Context