never-ending

adjective

1 the never-ending noise of the city:

incessant, continuous, unceasing, ceaseless, constant, continual, perpetual, unfaltering, permanent, uninterrupted, without interruption, unbroken, steady, unremitting, relentless, persistent, interminable, non-stop, without ceasing, endless, unending, without end, everlasting, eternal.

2 you need to avoid getting carried away by the never-ending tasks that could fill your day:

endless, countless, innumerable, myriad, without number, numberless, infinite, unlimited, untold, limitless, boundless, measureless.

never-ending Oxford Dictionary of English