When describing something as "without any weight," there are several synonyms that can be used to convey a similar meaning. One such synonym is "light," which suggests that the object in question lacks heft or mass. Another synonym is "flimsy," which implies that the object is insubstantial or fragile. "Inconsequential" is another option, conveying a sense of something that is unimportant or of little consequence. Finally, "insignificant" suggests that the object in question has little value or impact. All of these synonyms can be used effectively to describe something that lacks weight or substance, whether in a literal or figurative sense.