Thaddeus (??æd??s) or Thadeusn (Bible) New Testament one of the 12 apostles (Matthew 10:3; Mark 3:18), traditionally identified with JudeCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014