How To Pronounce Fun

In British English, fun is pronounced /fʌn/. The narrow phonetic transcription is [fʌ̃n]. In American English, it is pronounced /fʌn/.

Fun has one syllable. British and American speakers say it the same way.

Slashes / / show the phonemic transcription, the sounds that change meaning. Square brackets [ ] show the phonetic transcription, with the finer detail of how the sounds are actually made.