Semelfactive
In linguistics, semelfactive is a class of aktionsart or lexical aspect. The event represented by a semelfactive verb is punctual, perfective, and atelic. Semelfactive verbs include "blink", "sneeze", and "knock".
The idea of semelfactive as a category of lexical aspect was first posited by Bernard Comrie in addition to the more commonly known categories such as verbs of Activity, Accomplishment, Achievement, and State. The term's use in the realm of grammatical aspect is analogous in meaning to "iterative".
