Specificity in Lusaamia infinitives

Infinitives in Lusaamia (J.34, Kenya and Uganda) appear in two different forms, one having the reflex oxu- of the common Bantu class 15 verb prefix, and one having the prefix oo-. This paper describes and exemplifies the use of these two infinitival forms, proposing that the distinction represents a contrast in specificity and that the innovated oo- form developed via reinterpretation of grammatical distinctions borrowed from Dholuo.