Published online by Cambridge University Press: 10 December 2020
Morphologically conditioned phonology, where a particular phonological alternation or requirement holds only for a subset of lexical items or in a subset of morphological contexts, is well documented. This paper expands on the literature by examining phonological alternations where two independent triggering morphemes must both be present for a phonological alternation to apply. Several cases of doubly morphologically conditioned phonological alternations, from a diverse set of languages, are described. The existence of morphologically conditioned phonology with two triggers informs our models of the interface between morphology and phonology, in that phonological operations must be able to reference the presence of more than one morpheme simultaneously. A range of possible analyses are considered, including those set in Stratal OT, Indexed Constraint Theory, Cophonology Theory and Cophonologies by Phase Theory. A Cophonologies by Phase account is found to be optimal, where multiple morpheme-specific phonological requirements accumulate and co-trigger alternations within a single spell-out domain.
Thanks to Peter Jenks and Sharon Inkelas, who have been key collaborators in developing the formalism of Cophonologies by Phase. Thanks also to the Guébie community, as well as undergraduate students Brittany Blankinship, Andrea Eberle, Corrina Fuller, Steven Ho, Phoebe Killick, Shane Quinn, Katherine Russell, Ivy Wang and Emma Woolf for helping to maintain the online Guébie database. Thanks to Larry Hyman, Darya Kavitskaya and Yuni Kim, as well as audiences at UC Berkeley, NELS 2016, LSA 2017, AMP 2018, UC Santa Cruz, Georgetown University, CUNY, the University of Delaware, Princeton University, the Goethe University Frankfurt, the University of Chicago and the University of Maryland, for comments on various aspects of this work. The abbreviations used throughout this paper are in accordance with the Leipzig glossing rules (Comrie et al. 2015).