Meaning A boy's name of Irish origin, it means "Watchful." Origin of Greagoir Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Greagoir Similar Names Gergo Gregg Gregorio Grzegorz Griogair Grigori Gergõ Grgur Greguska Grisha Year by Year Popularity of Greagoir