The phrase "most ungrown" is spelled using standard English orthography. It is pronounced as /moʊst ʌn'ɡroʊn/. The word "most" refers to the superlative degree of "much," while "ungrown" means not fully matured. When used together, "most ungrown" refers to something that has not yet fully developed or grown. The spelling of the word follows the traditional rules of English language and can be easily understood by using the International Phonetic Alphabet (IPA) transcription.