名詞 hedonism:

1. the pursuit of pleasure as a matter of ethical principle
2. an ethical system that evaluates the pursuit of pleasure as the highest good

he.don.ism

n.（名詞）
Pursuit of or devotion to pleasure, especially to the pleasures of the senses.
享樂：對快樂，尤其是感官快感的追求和熱愛
Philosophy The ethical doctrine holding that only what is pleasant or has pleasant consequences is intrinsically good.
【哲學(xué)】 快樂論：認為只有令人快樂或帶來快樂結(jié)果的東西才是在本質(zhì)上好的倫理信條
Psychology The doctrine holding that behavior is motivated by the desire for pleasure and the avoidance of pain.
【心理學(xué)】 享樂主義：認為行動是追求享樂逃避痛苦為動機的信條

來源：
Greek hôdonô [pleasure] * see sw3d-
希臘語 hôdonô [快樂] *參見 sw3d-
-ism
-ism

【引伸】
he.donist
n.（名詞）
he.donis.tic
adj.（形容詞）
he.donis.tically
adv.（副詞）