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.
130+ Boys Middle Names That Hit The Sweet Spot Of Unique And Traditional, Tremendous T Names For Baby Boys, Liam, Alex, And Beyond: Boy Names With Natural Nicknames, Double The Fun: Boy Names With Double Letters,