Some Italian forms display an alternation between front and back diphthongs ([jE]/[wO]) in open, stressed syllables, and mid front and mid back vowels ([e]/[o]) in other contexts. In previous literature, a couple of fully phonological accounts have been proposed. Due to their overgeneration issues, though, these analyses were abandoned, and nowadays most literature agrees in conceiving of this alternation as a case of phonologically-conditioned allomorphy. This paper challenges this view and proposes a fully phonological analysis that capitalizes on the refinement of phonological representations. This is obtained by combining a version of strict CV (Scheer 2022) with Turbidity Theory (Goldrick 2001). This systems allows for the collapsing of the differences of the relevant allomorphs in the representation of the underlying form they derive from. Crucially, the latter contains a `turbid’ glide that surfaces only in stressed, open syllables, where the lengthening of the nucleus crucially provides room for the glide to surface. As shown, this system prevents the overgeneration affecting previous proposals, and provides further support to the substance-free take on phonology.
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