This research focused on the linguistic features and social aspects of the Ê”aÊƒo argot. Thernobjectives of this research are to describe the linguistic features of the Ê”aÊƒo argot and the socialrnaspects of the Ê”aÊƒo argot and its speakers in order to explain why the Ê”aÊƒo people use it as secretrnlanguage. To achieve these objectives, the researcher used purposive method sampling to selectrnthe informants. Elicitation, interview and participatory observation method were used to collectrnthe data. The data have been recorded by using audio-tape recorder and video-camera.rnQualitative as well as quantitative methods are employed to analyze the collected data.rnThe findings of this research are the following. There is underestimation between the Ê”aÊƒo andrnnon-Ê”aÊƒo groups. This underestimation is a reason for the Ê”aÊƒo group to be self-designated and tornhave secret language or argot. Second, the Ê”aÊƒo argot is derived from Tigrinya and Amharicrnwords through form, semantic, form and semantic changes, using different semantic aspects andrndirect used terms of Tigrinya. In form change, the Ê”aÊƒo argot uses phonological deformationsrnsuch as addition, metathesis, reduplication, substitution, deletion, vowel deformation andrndegemination as well as free variation and depalatalization of the sounds. In addition, suffixesrnand some prefixes of Tigrinya and Amharic, onomatopoeic words and changed terms fromrncompound verbs to single words have been used in the formation of the argot. The Ê”aÊƒo argotrnalso uses semantic load, instrumental nouns, paraphrastic descriptions, connotative andrndenotative meanings and naming whole and parts in the same word to solve inadequate ofrnexpressions. Ê”aÊƒo argot uses the phonological and syntactic structure as well as morphologicalrnexpressions of Tigrinya.