Definition of decadent adjective from the Oxford Advanced American Dictionary

 

decadent

 adjective
adjective
NAmE//ˈdɛkədənt//
 
(disapproving)
 
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having or showing low standards, especially moral ones, and an interest only in pleasure and enjoyment rather than serious things the decadent rich a decadent lifestyle/society There was something very decadent about filling ourselves with so much rich food.
See the Oxford Advanced Learner's Dictionary entry: decadent