Issac vs Thaddeus

Baby Name Comparison — 2026

Issac

Boy #856 Most Popular 2 Syllables

"laughter"

Origin: Hebrew

English American Jewish Christian African-American

✓ All Clear

Boy #850 Most Popular 3 Syllables

"courageous heart"

Origin: Aramaic

English Polish American Catholic

✓ All Clear

Issac Rank #856

Thaddeus Rank #850

Thaddeus is more popular, ranked #850 vs #856 for Issac.

Is Issac or Thaddeus more popular?

Thaddeus is more popular, ranked #850 compared to Issac at #856 in the United States.

What do Issac and Thaddeus mean?

Issac means "laughter" (Hebrew origin). Thaddeus means "courageous heart" (Aramaic origin).

Are Issac and Thaddeus boy or girl names?

Issac is primarily a boy name. Thaddeus is primarily a boy name.