The word 出事 is formed through a direct and vivid conceptual combination of its two component characters. The first character, 出 (chū), carries the core meaning of "to exit", "to go out", or "to emerge". The second, 事 (shì), means "matter", "affair", or "event". When combined, the construction creates a powerful mental image: a matter or event (事) has emerged or come out (出) from the ordinary, expected course of things. This imagery naturally implies an emergence into visibility or reality, specifically of an unplanned, negative, or troublesome incident, thus forming the unified meaning of "to have an accident" or "for something to go wrong".