Updated June 9, 2019 Share: Girl name origins & meanings Greek : Appreciative Girl name variations Thaddea Thadda Thaddeah Boy name origins & meanings Latin : Courageous; praiser Boy name variations Thaddeaus Thaddeus Thaddaus Thaddea Taddeo Tadeo Tadeusz Tadgh Thad Taddy Tadda Tad Ted Thadea