feliz
/feˈliθ/ · A1 · adj
happy, merry
🎉 From Latin felix (lucky, happy) — same root as felicity and the name Felix
English felicity and felicitations share the root, so feliz = full of felicity. Spanish relatives: felicidad (happiness), felicitar (to congratulate), and ¡Felicidades! (congratulations). Feliz Navidad = Merry Christmas.