dulcet
/ˈdʌlsɪt/adjective
- (especially of sound) sweet and soothing (often used ironically)（尤指声音）悦耳的, 甜美的, 令人快慰的（常用作反语）：
record the dulcet tones of your family and friends.
录下你亲友们悦耳的声音。
词源
late Middle English doucet, from Old French doucet, diminutive of doux, from Latin dulcis 'sweet'. The Latin form influenced the modern spelling.