0 a person's bad luck that is considered to be a fair and deserved punishment for something bad that they have done:
She'll get her comeuppance.
1 a punishment or some bad luck that is considered to be fair and deserved punishment for something bad that someone has done:
She’ll get her comeuppance, don’t worry.
He got his comeuppance when his council decided, at long last, to make a rate.
I hope that they will get their comeuppance.
This isn't the expected tale of a grasping, gold digger who gets her comeuppance.
In true genre tradition, the alien gets its come-uppance faced with human ability to reason logically.
Like all bad guys though, he eventually gets his comeuppance.
In the end, the girl and boy get together and the villain gets his comeuppance.
As a result, they were in constant battles with one another, with each in turn getting their comeuppance for pranks which were often quite violent.
He usually says this as a reaction to getting his comeuppance.