oops
interj. A2 Elementary US //ˈups// UK //ˈuːps// oops
interj. something you say when you make a small mistake or have a minor accident. You use it to show you didn't mean to do it.
interj. an exclamation used to acknowledge a minor error, accident, or clumsy action. Informal in register; typically used as a standalone utterance.
Oops, I dropped my pen on the floor.
Oops, I think I just sent that email to the wrong person.
Oops, I didn't realize the meeting had already started when I walked into the room.
Usage
Used as a standalone exclamation or to introduce a sentence explaining a mistake.