Liam vs Thaddeus

Baby Name Comparison — 2026

Liam

Boy #1 Most Popular 2 Syllables

Meaning

"strong-willed warrior"

Origin: Irish

Cultural Roots

Irish English American

Quick Stats

Popularity Rank
#1
Total SSA Count
22,164
Syllables
2
Formality
Moderate
Nicknames
Lee

Playground Safety Score

✓ All Clear
Full profile for Liam →

Thaddeus

Boy #850 Most Popular 3 Syllables

Meaning

"courageous heart"

Origin: Aramaic

Cultural Roots

English Polish American Catholic

Quick Stats

Popularity Rank
#850
Total SSA Count
284
Syllables
3
Formality
Formal
Nicknames
Thad, Tad, Taddy

Playground Safety Score

✓ All Clear
Full profile for Thaddeus →

Popularity Comparison

Liam Rank #1
Thaddeus Rank #850

Liam is more popular, ranked #1 vs #850 for Thaddeus.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Liam ___

  • Liam James
  • Liam Alexander
  • Liam Thomas
  • Liam Michael
  • Liam Patrick
  • Liam Joseph

Thaddeus ___

  • Thaddeus James
  • Thaddeus William
  • Thaddeus John
  • Thaddeus August
  • Thaddeus Cole
  • Thaddeus Lee

Sibling Name Ideas

Names that pair well as siblings.

If you choose Liam

Olivia Emma Noah Charlotte Sophia

If you choose Thaddeus

Augustus Sebastian Cornelius Edmund Beatrice

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Liam or Thaddeus more popular?

Liam is more popular, ranked #1 compared to Thaddeus at #850 in the United States.

What do Liam and Thaddeus mean?

Liam means "strong-willed warrior" (Irish origin). Thaddeus means "courageous heart" (Aramaic origin).

Are Liam and Thaddeus boy or girl names?

Liam is primarily a boy name. Thaddeus is primarily a boy name.

More Comparisons

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← Full profile: Liam ← Full profile: Thaddeus Browse all baby names