euphony

/Y UW1 F AH0 N IY0/
noun
  1. 1

    A pronunciation of letters and syllables which is pleasing to the ear.

  2. 2

    Pleasant phonetic quality of certain words.

    โ€œWhen I hear you speak, I hear beautiful euphony.โ€

Antonyms

Source: https://en.wiktionary.org/wiki/euphony