The spelling of the word "McManis" can be explained using the IPA phonetic transcription as /məkˈmænɪs/. The initial "Mc" indicates that it is a Scottish or Irish surname derived from "mac" which means son of. The next syllable "man" is pronounced with a short "a" sound /mæn/ and is followed by the suffix "-is" which is pronounced as /ɪs/. Hence, the correct spelling of this word is "McManis" and it is pronounced as /məkˈmænɪs/.
The word "McManis" is an anglicized version of the Gaelic surname "Mac Mánus". It has Scottish and Irish origins and is a patronymic surname. The Gaelic "Mac" means "son of", and "Mánus" is derived from the old Irish name "Mánas", which means "great" or "mighty". Therefore, "Mac Mánus" signifies "son of the mighty one". Over time, "Mac Mánus" evolved into "McManus" or "McManis" in English-speaking countries.