Tuwali lfugao (Tl) is a Philippine-type Austronesian language spoken in and around Kiangan, lfugao Province. There are approximately 25,000 speakers of the language. This paper describes the morphology of verb forms in TI, and the intricate interaction between morphology and phonology. It is shown that Tl makes use of affixation, reduplication, and gemination, both alone and in combination, to convey derivational and inflectional possibilities, with the affixation in particular serving in part to grant special referential status to one of the NPs of the clause.