"Happy Birthday to You" is a phrase synonymous with celebrating the anniversary of one's birth. However, there are various ways to express these wishes. Here are some alternative synonyms for "Happy Birthday to You": 1. Many happy returns of the day 2. Wishing you a wonderful birthday 3. Here's to a great year ahead 4. Have a fantastic birthday celebration 5. May your day be filled with joy and laughter 6. Cheers to another year of life 7. Sending you birthday happiness and love 8. Celebrating the wonderful person you are today. Regardless of how it's said, the sentiment of wishing someone a happy birthday is always a special occasion to celebrate.