A foolish or annoying person.
This word is not very nice and can make people feel a little angry or annoyed.
Examples:
He is such a shmuck, always making silly mistakes.
Don't be a shmuck and forget your keys again.
The boss is a real shmuck sometimes.
I can't believe that shmuck cut in line!
That guy is the biggest shmuck I've ever met.
The movie is about a big shmuck who learns to be better.