Adjective
1. occurring so frequently as to seem ceaseless or uninterrupted;
"a child's incessant questions""your perpetual (or continual) complaints"2. uninterrupted in time and indefinitely long continuing;
"the ceaseless thunder of surf""in constant pain""night and day we live with the incessant noise of the city""the never-ending search for happiness""the perpetual struggle to maintain standards in a democracy""man's unceasing warfare with drought and isolation""unremitting demands of hunger"