The spelling of the word "YARM" is a bit tricky as it doesn't follow the standard pronunciation rules of the English language. According to the IPA (International Phonetic Alphabet), "YARM" is pronounced as /jɑːm/. The letter 'y' is pronounced as /j/, which means it sounds like a consonant 'y'. Meanwhile, the letter 'a' is pronounced as /ɑː/, which sounds like an 'ah' sound. The letter 'm' is pronounced as /m/, which is a regular consonant sound. Overall, the spelling of "YARM" is an interesting example of how English can be unpredictable at times.