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

 

avuncular

 adjective
adjective
BrE BrE//əˈvʌŋkjələ(r)//
 
; NAmE NAmE//əˈvʌŋkjələr//
 
(formal) Middle age, Relations
 
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behaving in a kind and friendly way towards young people, similar to the way a kind uncle treats his nieces or nephews See related entries: Middle age, Relations Word Origin mid 19th cent.: from Latin avunculus ‘maternal uncle’, diminutive of avus ‘grandfather’.
See the Oxford Advanced American Dictionary entry: avuncular