The word "NAESAA" is spelled as /neɪsɑ:/ according to the International Phonetic Alphabet (IPA). It begins with the phoneme /n/, followed by the diphthong /eɪ/, which represents the long "a" sound. This is then followed by /s/, representing the "s" sound, and ends with the vowel sound /ɑ:/, which is typically pronounced as "ah". Despite its unique spelling, the word follows the basic rules of English phonetics and can be pronounced easily by breaking down its individual sounds.