When we describe something that has a weight of, we are implicitly referring to its mass. However, there are several antonyms to this word that signal the absence or decrease of mass. For example, instead of saying something has a weight of, we could use words like weightless, light, or insubstantial. These words denote the lack of heaviness or mass, such as in the case of a feather or a gas. Conversely, if we want to emphasize the heaviness, we could use words such as heavy, bulky, substantial, dense, or weighty. By using antonyms for has a weight of, we can convey different levels of mass or the lack thereof with precision and clarity.