In Korean, the tendency to delete the labiovelar glide w when it appears postconsonantally is conditioned by linguistic, stylistic, and social factors. Chief among these is the place specification for the preceding consonant: labiovelar glides are more likely to be deleted when preceded by a velar than by a labial, alveolar, or alveopalatal. It is proposed that this observation can be explained in terms of current phonological theory, in particular, the notions of feature geometry (Clements 1985; Sagey 1986) and the Obligatory Contour Principle (McCarthy 1986). Under such a model, adjacent segments share common features in ways that promote variability; specifically, the labiovelar glide shares the feature [back] with an adjacent velar (but shares no place features with adjacent labials, alveolars, and alveopalatals), thereby providing structural cohesiveness that inhibits the application of the deletion rule.