i Register
In some senses, oops is marked as colloquial. Watch for register when choosing this word.
intj
Acknowledging a mistake.
Oops! I left the lid off the ketchup.
Oops, I did it again / I played with your heart, got lost in the game
noun
A minor mistake or unforeseen difficulty.
It's an oops, but one that's your fault, not your puppy's.
Every plan and every activity has an “oops.” Oops, we forgot to..., oops, who was supposed to do that? We all have experienced “oopses”.
verb
To make a mistake; to blunder.