The spelling of the word "Bonniviss" can be a bit confusing, but it can be broken down using the International Phonetic Alphabet (IPA). The first syllable is pronounced as "bɒn" (like "bon" with a short "o" sound), the second syllable is pronounced as "ɪv" (like "eve" without the "e" sound at the end), and the final syllable is pronounced as "ɪs" (like "is" with a short "i" sound). Put together, "Bonniviss" is pronounced as "bɒnɪvɪs."