The spelling of the word "Arnita" can be explained through its phonetic transcription in the International Phonetic Alphabet (IPA). The first sound is the 'ɑ' sound, which is pronounced as "ah", followed by the 'r' sound, represented by the IPA symbol 'r'. Next, the 'n' sound is represented by the symbol 'n', and the 'i' sound is represented by the symbol 'i', pronounced as "ee". Finally, the 't' sound is represented by the symbol 't', and the 'a' sound at the end is pronounced as "uh". Thus, the word "Arnita" is spelled phonetically as "ɑrnitə".