Meaning Of Welsh origin, meaning 'ardor' or 'enthusiasm', and is a variant of Rhys, a fairly unpopular name. Origin of Rees Welsh +-100%Zoom level changed to 1 Popular Middle Names Anthony, Daniel, Thomas Pronunciation 🔊 Listen Rees REESS Similar Names Reiss TeDejion Tyreese Reece Tyresse Ap Rhys Plys Preece Rhys Reese Year by Year Popularity of Rees