Brook vs Kacyn

Baby Name Comparison — 2026

Brook

Boy #6,381 Most Popular 1 Syllable

"small stream, flowing water"

Origin: Old English

English American

✓ All Clear

Boy #6,406 Most Popular 2 Syllables

"vigilant, watchful"

Origin: Irish (Casey root)

American English

✓ All Clear

Brook Rank #6,381

Kacyn Rank #6,406

Brook is more popular, ranked #6381 vs #6406 for Kacyn.

Is Brook or Kacyn more popular?

Brook is more popular, ranked #6381 compared to Kacyn at #6406 in the United States.

What do Brook and Kacyn mean?

Brook means "small stream, flowing water" (Old English origin). Kacyn means "vigilant, watchful" (Irish (Casey root) origin).

Are Brook and Kacyn boy or girl names?

Brook is primarily a boy name. Kacyn is primarily a boy name.