The act or an example of substituting a mild, indirect, or vague term for one considered harsh, blunt, or offensive: Euphemisms such as slumber room . . . abound in the funeral business (Jessica Mitford).
ETYMOLOGY:
Greek euphmismos, from euphmizein, to use auspicious words, from euphmi, use of auspicious words : eu-, eu- + phm, speech; see bh-2 in Appendix I.