There are several synonyms for the word "sunshine" that can help you to describe a sunny day or a cheerful person. Some of these synonyms include sunlight, sunshiney, sunbeam, suntan, daylight, and sunlit. If you're looking to describe someone who brightens up your day, you could use words like cheerful, uplifting, jovial, or effervescent. Similarly, if you want to convey the warmth of the sun, you might say that it's balmy, toasty, or simply warm. There are plenty of ways to describe the feeling and atmosphere of a sunny day, so feel free to experiment with different synonyms to find the word that perfectly captures your mood!