You can also try your hand out wishing someone happy Passover in Hebrew: For beginners, you can say “happy Pesach” — “Pesach” is Hebrew for “Passover.”
You can also say “chag sameach,” which translates to “happy festival” and is the Hebrew equivalent of “happy holidays.” To make this Passover greeting specific, you can throw the word “Pesach” in the middle of that phrase — “chag Pesach samech.” To wish somebody a “kosher and joyous Passover” in Hebrew, it would be “chag Pesach kasher vesame’ach.”
Be aware that the “ch” in these words (Pesach, chag, sameach, vesame’ach) is not pronounced the way you’d say “chapstick”; it’s pronounced like “Bach.”