ABSTRACT
This chapter examines the analysis of transparent segments in nasal harmony, that is, segments which are produced with a raised velum within a nasal span. In antagonistic transparency, the spreading feature specification is incompatible with some acoustic or articulatory property of the transparent segment. The chapter develops a version of Sympathy theory in which opacity effects arise from the organization of the phonological constraint hierarchy into contiguous subgroups. Within this organizational structure, sympathetic faith is utilized to produce opaque constraint interactions, including transparency in nasal harmony. This is the harmonic sympathy model of opacity in grammar. A classic case of the type demanding a derivationally-opaque rule interaction occurs in the interaction of epenthesis and laryngeal coda deletion in Tiberian Hebrew. In derivational terms, the opacity effect in Tiberian Hebrew involves allowing some underlying structure to survive part-way into the derivation in order to trigger some rule.
