The spelling of the word "McCrady" can be explained using the International Phonetic Alphabet (IPA). The initial "Mc" represents a common Irish or Scottish surname prefix that means "son of". The "Cra" is pronounced with a short vowel sound, represented in IPA as /kræ/. The final "dy" is pronounced with a long "e" sound, represented as /di/. Therefore, the full spelling of "McCrady" can be transcribed as /məˈkrædi/. This surname has origins in Scotland and Ireland and is found mostly in the United States today.