This book focuses on one of the basic – yet still rather neglected in Latin linguistics– grammatical categories: comparison of adjectives and adverbs. Which Latin adjectives and adverbs allow for comparative and superlative forms, and which ones do not? This question may seem trivial to those working with modern languages but is not at all trivial in the case of a dead language such as Latin that has no native speakers and a limited corpus of written texts. Based on extensive data collection, the book aims to provide today’s readers of Latin with some objective criteria for determining the answer.