Kacy vs Theodore

Baby Name Comparison — 2026

Kacy

Girl #6,085 Most Popular 2 Syllables

Meaning

"vigilant, watchful"

Origin: Irish Gaelic (Cathasaigh)

Cultural Roots

American Irish-American

Quick Stats

Popularity Rank
#6,085
Total SSA Count
20
Syllables
2
Formality
Casual
Nicknames
Kay, K

Playground Safety Score

✓ All Clear
Full profile for Kacy →

Popularity Comparison

Kacy Rank #6,085
Theodore Rank #4

Theodore is more popular, ranked #4 vs #6085 for Kacy.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kacy ___

  • Kacy Ann
  • Kacy Marie
  • Kacy Lynn
  • Kacy Rose
  • Kacy Grace
  • Kacy Elaine

Theodore ___

  • Theodore James
  • Theodore William
  • Theodore Alexander
  • Theodore John
  • Theodore Henry
  • Theodore Arthur

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kacy

Brady Riley Avery Connor Logan

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

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 Kacy or Theodore more popular?

Theodore is more popular, ranked #4 compared to Kacy at #6085 in the United States.

What do Kacy and Theodore mean?

Kacy means "vigilant, watchful" (Irish Gaelic (Cathasaigh) origin). Theodore means "divine gift" (Greek origin).

Are Kacy and Theodore boy or girl names?

Kacy is primarily a girl name. Theodore is primarily a boy name.

More Comparisons

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← Full profile: Kacy ← Full profile: Theodore Browse all baby names