Synonyms: pretence, fake, act, fiction, simulation, imposture, fraud, feint, etc.
Definition of Sham
noun
1. something that is fake, false, or not genuine;
2. a person who shams; shammer;
3. a cover or the like for giving a thing a different outward appearance: a pillow sham.
Examples:
It was a complete sham.Our current free health service is a sham.Their marriage is a sham.He tried to expose the sham of their supposedly fair justice system.