Morphosyntax–phonology mismatches in Muskogee

The mismatching of morphosyntactic and phonological domains inside words provides a testing ground for models of the morphosyntax–phonology interface. This paper describes a pattern of morphosyntax–phonology mismatches in Muskogee. Muskogee verbs are spelled out at two phases, vP and CP, resulting in two phonological domains, which this paper models as ω-recursion. The vP phase and ωmin are mismatched: either vP-phase material is parsed outside ωmin – an undermatch – or CP-phase material is parsed inside ωmin – an overmatch. The mismatch pattern requires a parallel model of morphosyntax–phonology mapping to distinguish mismatches using gradient Align constraints, rather than categorial Match constraints. Additionally, a phase-based model must allow earlier cycles to be altered in later cycles, ruling out strict phase inalterability in phonology, while a Stratal OT analysis must send a word's first phase through the stem-level phonology, regardless of its ultimate phasal structure.