упадъчен означава в английски

decadent▼(characterized by moral or cultural decline)
adjective
[UK: ˈdek.ə.dənt] [US: ˈdek.ə.dənt]

effete▼(decadent)
adjective
[UK: ɪ.ˈfiːt] [US: e.ˈfiːt]