Linguistic mismatch phenomena involve semiotic functions that attach to forms in defiance of grammatical design features. Noun phrases, when used as predicates, are one example. How do predicate nominals correspond to our theories of what nouns mean? How do such phenomena challenge traditional conceptions of grammar? How do competing theories of the syntax-semantics interface stand up when confronted with mismatch phenomena? "Mismatch" addresses these questions through the efforts of some of the most original thinkers in semantic and semantic theory, exploring a wide variety of mismatch phenomena in a broad sampling of languages.