How To Pronounce Costume

In British English, costume is pronounced /ˈkɒs.tjuːm/. The narrow phonetic transcription is [ˈkʰʷɒs.tj̥ʷũːm]. In American English, it is pronounced /ˈkɑː.stuːm/.

Costume has two syllables, and the main stress falls on the first syllable. The British and American pronunciations are different, so listen to both.

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.