The name McKeighan is pronounced /məˈkeɪ.ən/. The spelling of this name can be explained by breaking it down into its phonetic components. The first syllable, "Mc," is a Gaelic prefix meaning "son of." The next syllable, "Keigh," is pronounced as "kay" and represents the sound of the letter "K." Lastly, the syllable "han" is pronounced as "ən," similar to the sound of the letter "N." Therefore, the phonetic pronunciation of McKeighan is "mə- KAY -ən."
The name "McKeighan" is of Irish origin and is derived from the Gaelic name "Mac Eochagáin". The Irish prefix "Mac" means "son of", and "Eochagáin" is a personal name derived from "Eochaidh", which means "horseman" or "horse lord". Over time, "Mac Eochagáin" transformed into "McKeighan" as a result of Anglicization and changes in pronunciation.