Cai vs Lucilla

Baby Name Comparison — 2026

Cai

Boy #1,906 Most Popular 1 Syllable

Meaning

"rejoice, delight"

Origin: Latin via Welsh

Cultural Roots

Welsh Chinese English

Quick Stats

Popularity Rank
#1,906
Total SSA Count
83
Syllables
1
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Cai →

Lucilla

Girl #6,340 Most Popular 3 Syllables

Meaning

"Diminutive of Lucia (light)"

Origin: Latin

Cultural Roots

Italian Roman English Spanish Portuguese French

Quick Stats

Popularity Rank
#6,340
Total SSA Count
19
Syllables
3
Formality
Formal
Nicknames
Lucy, Luce, Lulu

Playground Safety Score

✓ All Clear
Full profile for Lucilla →

Popularity Comparison

Cai Rank #1,906
Lucilla Rank #6,340

Cai is more popular, ranked #1906 vs #6340 for Lucilla.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cai ___

  • Cai James
  • Cai River
  • Cai Alexander
  • Cai Thomas
  • Cai Owen
  • Cai Finn

Lucilla ___

  • Lucilla Rose
  • Lucilla Mae
  • Lucilla Claire
  • Lucilla Jane
  • Lucilla Beatrice
  • Lucilla Florence

Sibling Name Ideas

Names that pair well as siblings.

If you choose Cai

Nia Rhys Lena Beau Seren

If you choose Lucilla

Cecilia Aurelia Vivienne Cordelia Octavia

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 Cai or Lucilla more popular?

Cai is more popular, ranked #1906 compared to Lucilla at #6340 in the United States.

What do Cai and Lucilla mean?

Cai means "rejoice, delight" (Latin via Welsh origin). Lucilla means "Diminutive of Lucia (light)" (Latin origin).

Are Cai and Lucilla boy or girl names?

Cai is primarily a boy name. Lucilla is primarily a girl name.

More Comparisons

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← Full profile: Cai ← Full profile: Lucilla Browse all baby names