Word formation in Arabic has traditionally been assumed to involve interdigitation of a consonantal root with a vocalic pattern. This view is adopted by a large number of modern generative morphologists. More recently, however, several morphologists have argued that words in Semitic are formed from fully vocalised stems. In this paper, I argue that in San’ani (the dialect of San’a), and in some other Arabic dialects, there is a class of verbs that have as part of either their denotations or connotations a diminutive sense. I then consider diminutive nouns in the dialect. On the basis of semantic and phonological relationships between diminutive verbs and their non-diminutive counterparts, as well as native speakers’ explanations of certain ...