Sincere vs Rex

Baby Name Comparison — 2026

Sincere

Boy #605 Most Popular 2 Syllables

"genuine, honest, without deceit"

Origin: Latin

American African American

✓ All Clear

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Sincere Rank #605

Rex Rank #793

Sincere is more popular, ranked #605 vs #793 for Rex.

Is Sincere or Rex more popular?

Sincere is more popular, ranked #605 compared to Rex at #793 in the United States.

What do Sincere and Rex mean?

Sincere means "genuine, honest, without deceit" (Latin origin). Rex means "king" (Latin origin).

Are Sincere and Rex boy or girl names?

Sincere is primarily a boy name. Rex is primarily a boy name.