The spelling of the word "am one tail" can be explained using the International Phonetic Alphabet (IPA). The first sound, "am," is pronounced as a schwa sound /əm/. The second sound, "one," is pronounced as /wʌn/. The final sound, "tail," is pronounced as /teɪl/. Therefore, the IPA transcription for this word would be /əm wʌn teɪl/. The spelling of words can often be better understood through the use of phonetics, which breaks words down into their individual sounds.