(Non)morphological word generation processes are one way to expand a language's lexicon. In this regard, the current study's specific goal is to explore the (non)morphological processes that Yemeni Urban Arabic (YUA) and Yemeni Rural Arabic (YRA) native speakers utilize to broaden their lexicons. The qualitative descriptive technique design was used to describe the data obtained in this study. The data was gathered from six individuals (4 males and 2 females) who are native speakers of the YA language. Using a high-fidelity digital recorder that was both tiny and lightweight, the data was recorded and saved. Respondents of YA native speakers (4 males and 2 females) were questioned in an interview to get the data. Specifically, the data set is comprised of transcriptions of recorded tokens that have been classified based on the (non)morphological processes that they have through. In this study, the researcher discovered a variety of (non)morphological processes that native speakers of Yemeni Urban Arabic and Yemeni Rural Arabic employ to broaden their lexicon. Morphological processes include suppletion, affixation, vowel mark placement, diminution, and conversion whereas univerbation, borrowing, and word creation are some of the non-morphological processes investigated in this study. Thus, the present research is focused on the (non)morphological mechanisms utilized to extend the YUA and YRA lexicons, respectively. This study's implications were also explained. So further research is required to identify how speakers of YBA (nomads) expand their linguistic repertoire.