Telicity  In linguistics, telicity (from the Greek , meaning "end" or "goal") is the property of a verb or verb phrase that presents an action or event as being complete in some sense. A verb or verb phrase with this property is said to be "telic", while a verb or verb phrase that presents an action or event as being "incomplete" is said to be "atelic". One common way to gauge whether an English verb phrase is telic is to see whether such a phrase as "in an hour", in the sense of "within an hour", (known as a "time-frame adverbial") can be applied to it. Conversely, a common way to gauge whether the phrase is atelic is to see whether such a phrase as "for an hour" (a "time-span adverbial") can be applied to it. This can be called the "time-span/time-frame test". According to this test, the verb phrase "built a house" is telic, whereas the minimally different "built houses" is atelic:  Other phrases can be tested similarly; for example, "walked home" is telic, because "John walked home in an hour" is fine, while "John walked home for an hour" is bad, and "walked around" is atelic, because "John walked around in an hour" is bad, while "John walked around for an hour" is fine. In applying this test, one must be careful about a number of things. One often encounters the notion that telic verbs and verb phrases "refer" to events that "have endpoints", and that atelic ones "refer" to events or states that "don't have endpoints". The notion of "having endpoints" applies to "events in the world" rather than the "expressions" that refer to them. This is the most criticized property of this definition. In fact, "every" event or state "in the world" begins and ends at some point, except, perhaps, for states that can be described as "the existence of the universe." Certainly, John's "being angry" has a beginning, and, unless John is somehow "eternally angry", it also has an endpoint. Thus, it is doubtful that one can define telic expressions by means of properties of the events or states that they "refer" to (a very similar problem arises with the notion that mass nouns refer to "things that can't be counted").