| verb | put down by force or intimidation โThe government quashes any attempt of an uprisingโ |
| verb | declare invalid โThe contract was annulledโ |
| repressive | adjective | restrictive of action |
| repression | noun | a state of forcible subjugation |
| subduer | noun | someone who overcomes and establishes ascendancy and control by force or persuasion |
| invalidation | noun | (law) a formal termination (of a relationship or a judicial proceeding etc) |
| invalidator | noun | an official who can invalidate or nullify |
| annulment | noun | (law) a formal termination (of a relationship or a judicial proceeding etc) |
| voidable | adjective | capable of being rescinded or voided |
| void | noun | the state of nonexistence |
| voider | noun | an official who can invalidate or nullify |
| nullifier | noun | an official who can invalidate or nullify |
| nullification | noun | the states'-rights doctrine that a state can refuse to recognize or to enforce a federal law passed by the United States Congress |