Olivia vs Thaddeus

Baby Name Comparison — 2026

Olivia

Girl #1 Most Popular 4 Syllables

Meaning

"olive tree"

Origin: Latin

Cultural Roots

English Italian American

Quick Stats

Popularity Rank
#1
Total SSA Count
14,718
Syllables
4
Formality
Moderate
Nicknames
Liv, Livvy, Oli

Playground Safety Score

✓ All Clear
Full profile for Olivia →

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

Olivia Rank #1
Thaddeus Rank #850

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

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Olivia ___

  • Olivia Rose
  • Olivia Grace
  • Olivia Jane
  • Olivia Mae
  • Olivia Claire
  • Olivia Jade

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 Olivia

Liam Noah Charlotte Emma Sophia

If you choose Thaddeus

Augustus Sebastian Cornelius Edmund Beatrice

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Olivia or Thaddeus more popular?

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

What do Olivia and Thaddeus mean?

Olivia means "olive tree" (Latin origin). Thaddeus means "courageous heart" (Aramaic origin).

Are Olivia and Thaddeus boy or girl names?

Olivia is primarily a girl name. Thaddeus is primarily a boy name.

More Comparisons

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