endlessly: with unflagging resolve; "dance inspires him ceaselessly to strive higher and higher toward the shining pinnacle of perfection that is the goal of every artiste"
If you describe something as unending, you mean that it continues without stopping for a very long time. the country's seemingly unending cycle of political violence. = endless. something, especially something bad, that is unending seems as if it will continue for ever
continuing forever or indefinitely; "the ageless themes of love and revenge"; "eternal truths"; "life everlasting"; "hell's perpetual fires"; "the unending bliss of heaven"