Abnegation is when you refuse yourself something you want — you do not take it, eat it, keep it, or do it, on purpose. It is a heavy, formal, almost church-like noun. You find it in religion, moral writing, and serious talk about giving things up: comfort, money, rest, even a whole way of life. People often say self-abnegation, which points the refusal at your own wishes, not at someone else. Though actually, it is not the same as being shy, being kind, or simply forgetting a treat; it is the act of pushing a want away. Everyday English prefers self-denial or giving something up. You rarely need this word in speech. If a writer chooses it, they want a grave tone, not a casual one.

克己、自我犧牲（正式／偏文學；口語較常說「忍住、放棄」）