Incessant
Incessant , adjective
[Latin incessans, -antis; pref. in- not + cessare to cease: compare French incessant. See Cease.]
Continuing or following without interruption; unceasing; unintermitted; uninterrupted; continual; as, incessant clamors; incessant pain, etc.
Against the castle gate,... Which with incessant force and endless hate,
They batter'd day and night and entrance did await.