The word "most returnless" may seem confusing in terms of spelling, but it can be easily deciphered with the help of phonetic transcription. The phonetic transcription for "most returnless" is /məʊst rɪˈtɜːnləs/. The first syllable "mo" is pronounced as "moh," the second syllable "st" as "st," and the final syllable "less" as "luhs." The word is spelled as it is pronounced, with the exception of the silent "e" in "returnless." This word means something that cannot be returned.