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

 

perfunctory

 adjective
adjective
BrE BrE//pəˈfʌŋktəri//
 
; NAmE NAmE//pərˈfʌŋktəri//
 
(formal)
 
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(of an action) done as a duty or habit, without real interest, attention or feeling a perfunctory nod/smile They only made a perfunctory effort. Word Origin late 16th cent.: from late Latin perfunctorius ‘careless’, from Latin perfunct- ‘done with, discharged’, from the verb perfungi.
See the Oxford Advanced American Dictionary entry: perfunctory