Thaddeus vs Issac

Baby Name Comparison — 2026

Thaddeus

Boy #850 Most Popular 3 Syllables

"courageous heart"

Origin: Aramaic

English Polish American Catholic

✓ All Clear

Boy #856 Most Popular 2 Syllables

"laughter"

Origin: Hebrew

English American Jewish Christian African-American

✓ All Clear

Thaddeus Rank #850

Issac Rank #856

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

Is Thaddeus or Issac more popular?

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

What do Thaddeus and Issac mean?

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

Are Thaddeus and Issac boy or girl names?

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