The spelling of the word "INHA" can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. The first sound is /ɪ/ which is the short vowel sound as in the word "it". The second sound is /n/ which is the sound for the letter "n". The third sound is /h/ which is the sound for the letter "h". The last sound is /ə/ which is the schwa sound, the most common vowel sound in English. It is pronounced as "IN-huh".