The word "Deuse" is a tricky one when it comes to spelling. Its pronunciation is "diu:s" (dee-oose), which can make it difficult for English speakers to figure out the correct spelling. Some may naturally write it as "Duce" or "Deuce", but it actually contains a schwa sound in the first syllable, which is represented by the letter "e". Therefore, the correct spelling is "Deuse". Remembering this rule can help prevent misspellings in the future.