Rouen is a proper noun referring to a historic city in northern France. In English contexts it is usually pronounced with a soft, non-phonemic initial consonant, followed by a silent or reduced vowel, and a final rhotic or non-rhotic ending depending on accent. Use is primarily geographic or cultural; in French, the native form is more faithful to /ʁuɑ̃/ with a nasal vowel.
Full pronunciation guide
