Window shopping refers to the act of looking at items displayed in store windows without necessarily intending to purchase them. There are several synonyms for this term that you can use depending on the context. For example, you can use the term "browsing" which means to look through items casually or without aim. "Window gazing" is another term you can use, and it also refers to looking at store displays or products without the intention of buying. "Window perusing" is another synonym for window shopping that you can use as it refers to the act of carefully examining products in a store display without buying them. Other synonyms include "window viewing", "window examining", and "window scrutinizing".