やすみなく
without rest; tirelessly; incessantly
Also written 休み無く
Adverb
その機械きかいは休やすみなく動うごく。
The machine operates around the clock.
彼かれらは昼夜ちゅうや休やすみなく働はたらいた。
They worked around the clock.
朝あさから休やすみなく雪ゆきが降ふり続つづいている。
Snow has been falling steadily since this morning.