An inferior substitute imitating an original
The dishonest store owner tried to sell ersatz products but claimed that they were designer.
Olive Garden's décor is designed to promote an ersatz Italian-American look-prominently featuring elements such as wine bottles, stucco walls, and displays of lush foliage.
After the thieves stole the artwork, they replaced it with an ersatz version to try to get away with the crime.
Econ Scrutiny, Inc., our ersatz employer, proved to be rather interesting.