upset

My late arrival caused the professor considerable upset.

But it is probably the biggest upset for the away side since Ronnie Radford smashed a famous goal as Hereford defeated Newcastle 2-1 in 1972.

"collision and upset": impact with another object or an overturn for whatever reason.

"Bob, let's cancel the babysitter. With this upset stomach, I can't go out tonight.

"Try Pepto-Bismol. Hospital tests prove it relieves upsets. And it's great for indigestion or nausea, too!"

The Board determines that the probable cause of this accident was the unfavorable interaction of severe vertical air drafts and large longitudinal control displacements resulting in a longitudinal upset from which a successful recovery was not made.