Meaning A boy's name of Gaelic origin, it means "Southerner." Origin of Dacy Gaelic , Irish +-100%Zoom level changed to 1 Popular Middle Names Fallyn, Jane Pronunciation 🔊 Listen Dacy Similar Names Deasach Donald Peadar Bealantin Gabhan Gearald Gille Mungan Raibeart Stiabhan Year by Year Popularity of Dacy