Synonyms:
ceaseless, constant, incessant, never-ending, perpetual, unceasing, unremitting
Meaning: uninterrupted in time and indefinitely long continuing; "the ceaseless thunder of surf"; "in constant pain"; "night and day we live with the incessant noise of the city"; "the never-ending search for happiness"; "the perpetual struggle to maintain standards in a democracy"; "man's unceasing warfare with drought and isolation"; "unremitting demands of hunger"
Synonyms:
ageless, aeonian, eonian, eternal, everlasting, perpetual, unending, unceasing
Meaning: continuing forever or indefinitely; "the ageless themes of love and revenge"; "eternal truths"; "life everlasting"; "hell's perpetual fires"; "the unending bliss of heaven"
Usage examples
It was one of profound melancholy--of a phaseless and unceasing gloom.
I took up my Residence in a Romantic Village in the Highlands of Scotland where I have ever since continued, and where I can uninterrupted by unmeaning Visits, indulge in a melancholy solitude, my unceasing Lamentations for the Death of my Father, my Mother, my Husband and my Freind.
And the beasts of the wild wood left their lairs and thickets and came up fawning on them with their tails. And she caused yet another marvel; for hitherto there was no flow of water on Dindymum, but then for them an unceasing stream gushed forth from the thirsty peak just as it was, and the dwellers around in after times called that stream, the spring of Jason.