Definition of unrelenting adjective from the Oxford Advanced American Dictionary

     

    unrelenting

     adjective
    adjective
    NAmE//ˌʌnrɪˈlɛntɪŋ//
     
    (formal)
     
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  1. 1(of an unpleasant situation) not stopping or becoming less severe synonym relentless unrelenting pressure The heat was unrelenting.
  2. 2if a person is unrelenting, they continue with something without considering the feelings of other people synonym relentless He was unrelenting in his search for the truth about his father.
unrelentingly
 
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adverb The rain beat unrelentingly down. Her face remained unrelentingly severe.
See the Oxford Advanced Learner's Dictionary entry: unrelenting