The spelling of the word "Winslet" is quite straightforward when it comes to English phonetics. The word is pronounced as /ˈwɪnz.lət/, with the stress on the first syllable. The initial "w" sound is followed by the short "i" sound, which is then followed by the "n" sound. The next syllable is pronounced with a short "z" sound, followed by the schwa sound "ə" and ends with the "l" sound. Overall, this word follows the basic rules of English phonics, making it easy to spell and pronounce.