出奇 (chū qí) is an adverb meaning 'unexpectedly' or 'surprisingly', emphasizing something that deviates sharply from what is ordinary, anticipated, or typical. Literally, 出 means 'to go out' or 'to appear', and 奇 means 'strange', 'unusual', or 'remarkable'; together, they convey the sense of something emerging in an unusually striking or unforeseen way. It often modifies verbs or entire clauses to highlight surprise, astonishment, or deviation from expectation.

This word frequently appears in descriptive or evaluative contexts—especially when expressing reactions to sudden, vivid, or atypical phenomena. It's commonly used in both spoken and written Chinese, though slightly more formal or literary than colloquial alternatives like 突然 or 没想到. 出奇 is typically followed by adjectives (e.g., 出奇地安静) or used predicatively (e.g., 这件事出奇), and it carries a neutral-to-positive connotation depending on context—often implying impressive or intriguing unexpectedness rather than mere shock.