Aspectual pairing and aspectual classes in Abui

Abstract This paper describes the aspectual classes in Abui, a Papuan language of the Timor-Alor-Pantar family. Abui innovated a system of aspectual stem pairing, realized by consonant mutation, vowel grading, and rime mutation. Although stem pairing is widespread (about 61% of the verbs alternate), about 38% of our 1,330 verb sample are unpaired and immutable. Abui verbal stems combine with aspectual affixes, adverbs and auxiliary verbs, whose distribution is used here together with the stem types to describe aspectual classes, which are understood as lexicalizations of transitional possibilities of lexical items (e.g. inchoative-stative vs. inchoative-gradual.inchoative-stative). The paper takes the bidimensional approach to aspect distinguishing between properties associated with the perfective-imperfective system and other aspectual marking (cf. Sasse, Hans-Jürgen. 2002. Recent activity in the theory of aspect: accomplishments, achievements, or just non-progressive state? Linguistic Typology 6(2). 199–271). Combining the features of both types of aspectual marking, we construct in a bottom-up fashion the aspectual classes in Abui and also show that these may be further refined if contextual features such as valency or degree of change (affectedness) were included. A characteristic feature of the Abui system is the elaborate system of stative-inchoative verbs sensitive to scalar and change properties (e.g. instant vs. gradual). Abui telic verbs show sensitivity to the properties of the resulting state and are formally associated with stem alternation.