The word "McDavis" is a phonetically irregular name, consisting of the prefix "Mc" followed by the name "Davis." In IPA phonetic transcription, it would be pronounced /məkˈdeɪvɪs/, with a schwa sound for the "Mc" and a long "a" sound in "Davis." The "s" at the end of the word is pronounced as a voiced "z" sound. While the spelling may appear unusual, it is a common convention for certain surnames that originated in Gaelic-speaking regions of Scotland and Ireland.