Cai vs Sylvester

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 →

Popularity Comparison

Cai Rank #1,906
Sylvester Rank #2,106

Cai is more popular, ranked #1906 vs #2106 for Sylvester.

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

Sylvester ___

  • Sylvester James
  • Sylvester Thomas
  • Sylvester Lee
  • Sylvester Ray
  • Sylvester Dean
  • Sylvester Paul

Sibling Name Ideas

Names that pair well as siblings.

If you choose Cai

Nia Rhys Lena Beau Seren

If you choose Sylvester

Cornelius Leopold Augusta Theodora Ignatius

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 Sylvester more popular?

Cai is more popular, ranked #1906 compared to Sylvester at #2106 in the United States.

What do Cai and Sylvester mean?

Cai means "rejoice, delight" (Latin via Welsh origin). Sylvester means "of the forest, wooded" (Latin origin).

Are Cai and Sylvester boy or girl names?

Cai is primarily a boy name. Sylvester is primarily a boy name.

More Comparisons

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