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

 

nugatory

 adjective
adjective
BrE BrE//ˈnjuːɡətəri//
 
; NAmE NAmE//ˈnuːɡətɔːri//
 
(formal)
 
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having no purpose or value synonym worthless Word Origin early 17th cent.: from Latin nugatorius, from nugari ‘to trifle’, from nugae ‘jests’.
See the Oxford Advanced American Dictionary entry: nugatory