A recursive prefix in Neasu

Abstract Neasu (Tibeto-Burman: China) exhibits a prefix that derives new coordinators from existing ones by elaborately changing their subcategorial properties. Prefixed and unprefixed coordinators are distinguished by the complement they take (±verbal, ±CoP) and the possibility of being stacked up at least twice (±stackable). A prefixed coordinator has two of these three features switched from “−” to “+”, when compared with its unprefixed counterpart and thus see its ability to occur as the head of recursive coordination structures increased. The prefix ao- is an operator of recursion.