What is the proper greeting for the Jewish High Holy Days? For instance, how do you say "Happy New Year" in Hebrew? What is the proper greeting that one gives to a Jewish person at this time of year?
According to Mayaan Pase, programming director for KU Hillel, the Jewish student organization for Kansas University, the traditional way to say "Happy New Year" to a Jew on Rosh Hashanah is: "Shanah tovah, techatemu v' techatevu." This means, "May you have a good year, and may you be written in the Book of Life." It's often shortened to "Shanah tovah." Or, you can simply say, "Happy New Year."
On Yom Kippur, the traditional greeting is: "G'mar chatimah tovah." This means, "May you have a good fast." (Jews fast for one day -- from sunset to sunset -- on Yom Kippur, the Day of Atonement.)