Incessant, a.
Etymology: [L. incessans, -antis; pref. in- not + cessare to cease: cf. F. incessant. See Cease.]
Continuing or following without interruption; unceasing; unitermitted; 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. Spenser.
Syn. -- Unceasing; uninterrupted; unintermitted; unremitting; ceaseless; continual; constant; perpetual.