Definition of unhappiness noun from the Oxford Advanced Learner's Dictionary

     

    unhappiness

     noun
    noun
    BrE BrE//ʌnˈhæpinəs//
     
    ; NAmE NAmE//ʌnˈhæpinəs//
     
    [uncountable] Unhappiness
     
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  1. 1the feeling of not being happy; sadness Her unfaithful husband was causing her deep unhappiness. See related entries: Unhappiness
  2. 2unhappiness (about/at/with something) the feeling of not being pleased or satisfied with something He expressed his office's unhappiness about the way the regulations were made.
  3. Word Familyhappy adjective (unhappy)happily adverb (unhappily)happiness noun (unhappiness)