Whoops vs. Oops: What's the Difference?
Whoops and Oops Definitions
Used to express apology or mild surprise.
Used to express acknowledgment of a minor accident, blunder, or mistake.
(colloquial) Acknowledging a mistake.
Oops! I left the lid off the ketchup.
Plural of whoop
A minor mistake or unforseen difficulty.
To make a mistake; to blunder.