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

     

    unrelenting

     adjective
    adjective
    BrE BrE//ˌʌnrɪˈlentɪŋ//
     
    ; NAmE NAmE//ˌʌnrɪˈlentɪŋ//
     
    (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.
  3. Extra examples Their success was the result of unrelenting hard work. There had been an unrelenting stream of legislative change. They kept up an unrelenting pressure on the enemy supply lines. unrelenting hatred/​interest/​persistence
See the Oxford Advanced American Dictionary entry: unrelenting