‘曲折’ literally combines ‘曲’ (bent, winding) and ‘折’ (bent, folded, or broken), together evoking a path that bends and turns repeatedly—like a mountain road or a meandering river. As a noun, it refers to a physical or metaphorical twisty route; as an adjective, it describes something complex, indirect, or full of unexpected changes.

This word is commonly used in both concrete and abstract contexts: describing geography (e.g., a winding trail), narrative structure (e.g., a story with plot twists), or life experiences (e.g., a career path marked by setbacks and detours). It carries a neutral-to-slightly literary tone and often implies challenge or intricacy—not necessarily negativity, but a lack of straight-line simplicity. Native speakers use it especially when emphasizing process over outcome, or when highlighting how complexity shapes understanding or development.