curveball

noun
UK /ˈkɜːv.bɔːl/
US /ˈkɝːv.bɑːl/

A curveball is a baseball throw that bends in the air to trick the batter.

The pitcher threw a curveball that fooled the batter completely.


OTHER MEANINGS

2. A surprising and unexpected event or problem.

The rainy weather was a curveball for our picnic plans.

3. A tricky question or remark meant to catch someone off guard.

The reporter threw a curveball at the mayor during the interview.

4. Something that is difficult to predict or handle.

Life often throws you a curveball when you least expect it.