How To Pronounce Whilst

In British English, whilst is pronounced /waɪlst/. The narrow phonetic transcription is [waɪɫst̚]. In American English, it is pronounced /waɪlst/.

Whilst 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.