An Anglicized version of the Aramaic name Thaddai, which has an unclear meaning. It may be a variation of Theodore, which means “gift of God,” or of the Aramaic word “tawdi,” meaning “praise, thanks.” This does not, however, make your little Thaddeus more likely to remember his manners in front of grandparents, clergy members, or anyone else you’d like to impress with your superior parenting.
Thad, Tad, Teddy.
Famous people named Thaddeus:
Filmmaker Thaddeus "Thad" Matula; football players Thaddeus Lewis and Thaddeus Gibson; Civil War-era Congressman and slavery opponent Thaddeus Stevens.
St. Judas (Jude) Thaddeus is the patron saint of lost causes.