Save Gender Masculine Usage French (Archaic) Pronounced Pron. DEE-DAY-REEK [key] Other Forms FormsDédéric, Diedéric, Tédéric, Thédéric, Thidéric, Tidéric Meaning & History French form of Diederik (also compare Diderich and Diderik). In other words, it is a more archaic form of Thierry.