There are several synonyms for the word "starly" which is a made-up word. Some possible options are: starrish, starlinglike, star-like, star-shaped, star-patterned, star-spangled, and starry-eyed. Each of these words has its own distinct connotation and usage. For example, "starrish" might suggest something that resembles or acts like a star, whereas "starlinglike" could describe something that resembles a particular type of bird. "Star-shaped" and "star-patterned" are both fairly straightforward, while "star-spangled" and "starry-eyed" might have more metaphorical or poetic implications. Ultimately, the synonym you choose depends on the context and tone of your writing.