This synopsis rounds off the collected volume by summarising the main findings with regard to the concepts, approaches, and methods in studies on (non-)canonical syntax: First, the contributions corroborate the ubiquity of non-canonical syntax – a phenomenon which occurs in all areas of language use. The synopsis then refers back to the definition of the concept of (non‑)canonicity provided in the Introduction to the volume. The contributions to the volume, however, show that both the existence of neighbouring alternatives and the functions of non-canonical constructions are of importance when it comes to understanding non-canonical syntax and its longevity, despite its rarity. This demonstrates that a combination of the theory- and the frequency-based approaches is indeed essential. The synopsis also discusses the predominance of empirical and corpus-based approaches to the study of syntactic (non‑)canonicity, but also emphasises the merits of methodological pluralism, before it finally specifies a number of desiderata for future research into syntactic (non-)canonicity.