euphemism

1. N-COUNT A euphemism is a polite word or expression that is used to refer to things that people may find upsetting or embarrassing to talk about, for example sex, the human body, or death. 委婉語

The term "early retirement" is nearly always a euphemism for layoffs nowadays. 如今“提前退休”這個詞幾乎縂是下崗的委婉語。