Synonyms of 'penny-pincher'
If you say that someone is a miser, you disapprove of them because they seem to hate spending money, and to spend as little as possible.
I'm married to a miser.
a stingy person
If you call someone a Scrooge, you disapprove of them because they are very mean and hate spending money.
What a bunch of Scrooges.
Thesaurus for penny-pincher from the Collins English Thesaurus
a person who is extremely frugal or stingy