Vocables can be attenuated to a point at which it is no longer lexical and not functionalized either. We make the distinction because these vocables remain in the language but they do not become structurally different; that is, no changes in category occur. Will, ought, rather, sooner are example of this vocabulary for which a semantic theory is very difficult to account for. So is mental vocabulary such as intention, mind, truth, moral, and so on. These vocables might have had lexical ancestors that are rooted in other languages. However, in present English, it is unclear what anyone means with much detail when using this vocabulary. In fact, we can only give a detailed account of attenuated vocabulary by searching for its lexical roots; otherwise, in the event that the genealogy is not available, we must rely on some other account that redefines attenuated vocables in more lexical terms. For example, a more detailed account of intention can be given using the idiom of neuroscience. However, this exercise would modify how people use intention and so we may consider the redefined term as an entirely new lexical vocable.