Thaddius meaning, boyThaddius

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Meaning and Name Origin

Thaddius \th(ad)-dius\ as a name for boys means "heart". Thaddius is a derivative of Thaddeus (Aramaic). A scarce boys' name.


Thaddius has 5 variants: Thaddaeus, Thaddaios, Thaddaos, Thaddaus and Thadeus.

Thaddius has 9 more related variations via Thaddeus: Tad, Tadd, Taddeo, Taddeusz, Tadeo, Tadio, Tadzio, Thad and Thady.


Thaddius is an uncommon first name for men. Thaddius is an equivalently rare surname too for all people. (2000 U.S. Census)

Below is a graphed comparison of the usage of Thaddius and related names. Prominent varying forms of Thaddius (#unlisted) are Tad, Thad and Thaddeus (#732 last year). Adoption of these boy names reached its most widespread during 1970-1979 and is now significantly lower, with the forms Tad, Thad and Thaddeus becoming less in vogue. (Top 1000 Birth Names Statistics, 2014)

Top 1000 baby names ranking of Tad, Thad, Thaddeus in U.S.

Top 100 baby names ranking of Thaddius and related baby names outside U.S.