This thesis focuses on the unique experiences of bilingual Spanish-speaking Latina/o/x individuals who have grown up in the U.S. through a critical methodology and testimonio. I look into understanding bilingual Latina/o/x lived experiences surrounding their native Spanish fluency to explore the extents to which Spanish fluency–and subsequent language critiques about their fluency–plays a role in Latina/o/x identity formation and Latina/o/x intragroup relations through the following themes: (1) The kind of Spanish that was useful: functions of language, (2) Como que mi perdí en los dos lados: Effects of language loss stigma, and (3) Barriers and acts of resistance. Findings show that students had dismissed their own experiences of language ...