A curveball
Meaning
An unexpected and often problematic event, question, or situation that catches someone off guard.
Origin
A "curveball" is one of baseball's most deceptive pitches, designed to fool the batter. Invented in the late 19th century, pitchers discovered they could impart a spin on the ball that would make it deviate from a straight path, "breaking" or "curving" just before reaching home plate. This unexpected deviation from the anticipated trajectory made it incredibly difficult for a batter to hit, often resulting in a swing and a miss. It wasn't long before this challenging, sudden shift in direction leapt from the diamond into everyday language, becoming a vivid metaphor for any unforeseen event or problem that catches someone off guard and requires quick, agile thinking to address.
Examples
- Just when we thought the project was running smoothly, the client threw us a curveball with a major design change.
- Life often throws you curveballs, and it's how you react to them that truly defines your character.