joven
/ˈxoben/ · A1 · adj
young, youthful
👶 joven = juvenile: both from Latin iuvenis, young
Latin iuvenis (young) gave Spanish joven and English juvenile, junior and rejuvenate. Swap the Spanish j (a throaty h sound) and b-like v back to Latin i and v: joven → iuven-. Same root, same meaning.