The word Gadway is a surname that is pronounced as /ˈɡædweɪ/ (GAD-way) in IPA phonetic transcription. The first syllable "Ga" is pronounced with a hard "g" sound, as in "goat." The second syllable "dway" is pronounced as /dweɪ/ (dway). The "d" sound is followed by a long "u" sound represented by the letter "w", and the syllable ends with the sound of long "a" as in "ray." Therefore, the correct spelling of this word is "Gadway" and it is pronounced as GAD-way.