Book excerpt: Andrew Spencer argues that inflection and derivation cannot be properly distinguished and that conventional approaches to morphology are fatally flawed. He uses intermediate types of lexical relatedness in a variety of languages (including Slavic, Australian, Germanic, and Romance) to develop an enriched and morphologically-informed model of the lexical entry. He then uses this to build the foundations for a model of lexical relatedness that is consistent withparadigm-based models. This profound and stimulating book will interest morphologists, lexicographers, and theoretical linguists more generally.