Definition of incessant adjective from the Oxford Advanced Learner's Dictionary

 

incessant

 adjective
adjective
BrE BrE//ɪnˈsesnt//
 
; NAmE NAmE//ɪnˈsesnt//
 
(usually disapproving)
 
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never stopping synonym constant incessant noise/rain/chatter incessant meetings Word Origin late Middle English: via Old French from late Latin incessant-, from in- ‘not’ + Latin cessant- ‘ceasing’ (from the verb cessare).Extra examples Even in incessant rain the town still looked lovely. She raised her voice above the incessant beat of the music. There was the incessant traffic noise in narrow streets.
See the Oxford Advanced American Dictionary entry: incessant