What greetings are appropriate on Passover?

On Passover, we can greet one another with “Chag Pesach sameach!” which means “Happy Passover!” and some people wish each other a "sweet Pesach," or, in Yiddish, a "ziessen Pesach." We can also say “Chag kasher v’sameach” (Happy and kosher holiday, referring to Passover’s food restrictions).  As on any happy holiday or festival, we can say “Chag sameach!” in Hebrew (“Happy holiday!”) or “Gut yontif!” (“Happy holiday!”) in Yiddish.