Definition of uncomplaining adjective from the Oxford Advanced American Dictionary

 

uncomplaining

 adjective
adjective
NAmE//ˌʌnkəmˈpleɪnɪŋ//
 
(approving)
 
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not saying that you are unhappy about a difficult or unpleasant situation; not saying that you are in pain
uncomplainingly
 
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adverb
See the Oxford Advanced Learner's Dictionary entry: uncomplaining