The term "chill diva" refers to a person who exudes a laid-back attitude while still maintaining a confident and powerful aura. Synonyms for "chill diva" may include "cool cat," "relaxed queen," "laid-back goddess," or "mellow empress." These descriptors all convey a similar sense of calm and control, while also hinting at a certain level of sophistication or regality. Other potential synonyms might include "easygoing monarch," "serene ruler," or "composed sovereign." Ultimately, the precise term used to describe a "chill diva" will depend on the specific context and situation, but all of these options convey a sense of poise, confidence, and ease.