This Perspectives article proposes a renewed vision of teaching English to speakers of other languages (TESOL) through a translanguaging (TL) stance, grounded in critical sociolinguistic inquiry and embodied practice. A TL theory of language asserts an activist agenda to dismantle mono/lingualism, inviting a more dynamic and expansive view of multilingualism that actively challenges linguistic hierarchies and associated ideologies to recognize networks of meaning distributed across linguistic and nonlinguistic forms. This openness to all resources beyond language commensurates with the emerging posthumanist and new materialist perspectives in applied linguistics to consider how bodies, objects, and space intersect as wider assemblages, inciting critical citizenship in ethical interdependence between the human and natural world. Grounded in this understanding, we propose a systematic, coherent TL methodology for TESOL and teacher education, engaging teachers and students in critical sociolinguistic inquiry and embodied practice to support interrogation of language and power, mapping inter- and intra-actions in the human, social and eco-environment. With this approach teachers might explore with students' ways of doing/being/knowing in reflexivity towards all forms of inequities, particularly one's privilege and complicity and what ethical responsibility entails in the sociocultural, sociopolitical, and eco-world. Providing examples from classroom studies and teacher education research, we discuss implications for both K-12 classrooms and postsecondary educational contexts.