The spelling of the word "perignon" can be explained through its phonetic transcription: /pɛʁiɲɔ̃/. The first syllable is pronounced as "pɛʁ" which has a rolling R sound and a short E vowel. The second syllable is "iɲ" which has a nasalized I sound, and the final syllable is pronounced as "ɔ̃" which sounds like the English word "on" but with a nasalized O sound. Overall, the spelling of "perignon" reflects the unique blend of French phonetics used in the language.