The spelling of the word "Lydah" can be explained using the International Phonetic Alphabet (IPA) transcription as "laɪdə". The "L" is pronounced as the letter "l", followed by the "ai" diphthong, which consists of the vowel sounds "a" and "i" blended together. The "d" is pronounced as the letter "d", and the last syllable is pronounced as "uh". Overall, the spelling of "Lydah" accurately reflects how the word should sound when pronounced using English phonetics.