"Merry Christmas to you" is a traditional greeting during the holiday season, but there are many other ways you can express your warm wishes. Some synonyms include "Happy Holidays," "Season's Greetings," "Joyous Noel," "Feliz Navidad," "Happy Hanukkah," "Happy Kwanzaa," or "Happy New Year." Additionally, you can personalize your message by adding a specific message to the recipient, such as "May your holiday be filled with love and joy" or "Wishing you peace and happiness in the new year." Whatever you choose to say, the important thing is to spread love and good cheer during this magical time of year.