In ‘Keywords’ (1976), Raymond Williams devised a “vocabulary” that reflected the vast social transformations of the post-war period. He revealed how these transformations could be grasped by investigating changes in word usage and meaning. ‘Keywords for Radicals’—part homage, part development—asks: What vocabulary might illuminate the social transformations marking our own contested present? How do these words define the imaginary of today’s radical left? With insights from dozens of scholars and troublemakers, Keywords for Radicals explores the words that shape our political landscape. Each entry highlights a term’s contested variations, traces its evolving usage, and speculates about what its historical mutations can tell us. More than a glossary, this is a crucial study of the power of language and the social contradictions hidden within it.