This study examines the idiolect of Сашко – a hyper-multilingual global nomad whose language repertoire draws on forty languages, ten of which he speaks with native or native-like proficiency. By analyzing grammatical and lexical features typifying Сашко’s translanguaging practices (code-switches, code-borrowings, and code-mixes), as documented in the corpus of reflexive notes that span the last twenty-five years, the author designs Сашко’s translanguaged grammar. Instead of being a passive additive pluralization of separated, autonomous, and static monolects, Сашко’s grammar emerges as a deeply orchestrated, unitary, and dynamic strategy. From Сашко’s perspective, this grammar constitutes a tool to express his rebellious and defiant identity; a tool that – while aiming to combat Western mono-culturalisms, compartmented multilingualisms, and nationalisms – ultimately leads to Сашко’s linguistic and cultural homelessness. This paper – the last in a series of three articles – is dedicated to Сашко’s mixed languages and translanguaged grammar typifying Сашко-lect in its integrity.