The word "un does" is spelled phonetically as /ʌn ˈdʌz/. The first syllable "un" is pronounced with a short u sound, as in "under". The second syllable "does" is pronounced with a long o sound, as in "rose". The letter s in "does" is pronounced as a voiced z sound, similar to the ending sound in the word "buzz". When spelled out phonetically, it helps to understand the proper pronunciation of this commonly used verb.