Girirra is believed to be one of the Eastern Lowland Cushitic Languages ofrnEthiopia. [t has not been morphologically described so far. This study attempts tornexamine the structure of its words on the basis of the theoretical framework known as thernLexical Hypothesis. Particularly it follows the weak Lexicalist Hypothesis of Siegelrn(1974), Aronoff (1976), and Allen (1978). The study describes the processes ofrnnominalization, verbalization, and adjectivization.rnThe study attempts to describe the roots or stems from which nouns, verbs andrnadjectives are derived along with the affixes that derive them, and the rules that govern thernprocesses.rnCompounding and reduplication are al so examined as morphological processes.rnThe study also attempts to describe the position of the head of words. In bothrnaffixation and compounding, the head is considered to be either the constituent which hasrnthe same syntactic feature as the whole word or that which determines the central meaningrnof the word.