The spelling of the word "conniff" can be explained through International Phonetic Alphabet (IPA) transcription. The first sound is a "k" sound followed by an "ɑ" sound, which is the short "a" sound. The second syllable begins with a nasal "n" sound followed by a long "i" sound represented by the IPA symbol "aɪ." Finally, the last syllable is pronounced with a "f" sound. Therefore, the correct spelling of this word is "conniff" and is pronounced as /kɑnɪf/.