indulging in evil deeds; being steeped in vice
A strong, somewhat literary expression for someone who habitually commits evil acts without restraint. Often used in moral or religious contexts.
He led a life steeped in evil deeds.
悪事 is a general term for an evil act or crime, while 悪行三昧 emphasizes continuous, unrestrained indulgence in such acts.
放蕩三昧 refers to a life of dissipation and debauchery, whereas 悪行三昧 focuses on moral evil and wrongdoing.
Compound of 悪行 (evil deeds) and 三昧 (absorption, devotion), originally from the Buddhist term samādhi, extended to mean 'being absorbed in' something. The exact historical derivation is uncertain, but the word follows a common pattern of attaching 三昧 to a noun to indicate indulgence.