This reference compiles an alphabetical list of more than five thousand common headwords with corresponding synonyms and antonyms arranged so synonyms follow the leading word and antonyms follow the abbreviation Ant. Entries note parts of speech where necessary, sometimes grouping closely related terms with semicolons, and direct readers to root entries for prefixed forms. A brief preface outlines the compiler’s aims, sources consulted, and the conventions of abbreviation and ordering, facilitating efficient lookup and cross-referencing among related nouns, verbs, and adjectives.