noun
idle pursuit of pleasure; self-indulgent enjoyment
Formal or literary term for seeking pleasure in a carefree, often self-indulgent way. Carries a nuance of avoiding responsibility or serious pursuits.
彼は若い頃、逸楽にふけって財産を失った。
In his youth, he indulged in idle pleasures and lost his fortune.
逸楽の日々を送るより、社会に貢献したい。
Rather than spending my days in idle pleasure, I want to contribute to society.
Compound of 逸 (escape, deviate, indulge) and 楽 (pleasure, comfort). The exact historical derivation is uncertain, but the combination suggests pleasure that deviates from proper conduct.