Thaddeaus

Thaddeaus is a masculine name representing an uncommon spelling variation of Thaddeus, which derives from Aramaic origins meaning 'gift of God' or 'courageous heart.' This alternate spelling adds an extra 'a,' giving the name a slightly more elaborate, classical feel. Historically, the name connects to the biblical Thaddeus, one of Jesus's twelve apostles, providing it with religious significance. While the traditional Thaddeus has maintained moderate usage throughout Western history, the Thaddeaus variation remains considerably rarer. The name carries an intellectual, distinguished quality with its classical roots and scholarly sound. Parents might choose this spelling for its unique character while still connecting to the historical and biblical associations of the more traditional form.

Pronounced thad-AY-us.

As of October 2026, Thaddeaus ranked #14045 in US births in 2010 SSA, peaked at #4129 in 1978.