Meaning and name origin
Thaddeus \th(ad)-deus\ as a boy's name is pronounced THAD-ee-us. It is of Aramaic origin, and the meaning of Thaddeus is "heart". Also possibly derives from Theodorus, meaning "God's gift". Biblical: one of the 12 apostles. Jude is another form of the name.
There is 1 feminine form of Thaddeus: Thaddea.
Thaddeus is a somewhat popular first name for males (#611 out of 1220, Top 50%) but an uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is the baby name popularity of the name Thaddeus for boys. Thaddeus reached its highest rank of #375 in the U.S. in 1910-1919. (2014 statistics).
Displayed below is a comparison of the popularity of the boy name Thaddeus and its variant forms. Popular variation forms ranked in the Top 1000/100 are Jude (#162), Thaddeus (#732), Tad and Thad. (2014 statistics).