Thaddus vs Caysyn

Baby Name Comparison — 2026

Thaddus

Boy #33,169 Most Popular

✓ All Clear

Boy #33,330 Most Popular 2 Syllables

"vigilant in battle, watchful"

Origin: Irish Cathasaigh

American English

✓ All Clear

Thaddus Rank #33,169

Caysyn Rank #33,330

Thaddus is more popular, ranked #33169 vs #33330 for Caysyn.

Is Thaddus or Caysyn more popular?

Thaddus is more popular, ranked #33169 compared to Caysyn at #33330 in the United States.

What do Thaddus and Caysyn mean?

Caysyn means "vigilant in battle, watchful" (Irish Cathasaigh origin).

Are Thaddus and Caysyn boy or girl names?

Thaddus is primarily a boy name. Caysyn is primarily a boy name.