The spelling of the word "Montpas" can be explained using the International Phonetic Alphabet (IPA) transcription. The first syllable "Mont" is pronounced as /mɑːnt/ which represents the sound of "ah" followed by "nt". The second syllable "pas" is pronounced as /pæs/ which represents the "ae" sound followed by "s". Thus, combining the two syllables gives us the pronunciation of "Montpas" as /mɑːntpæs/. Understanding IPA can help in correctly spelling and pronouncing words in English and other languages.