1. a person or thing that makes something invalid or void

Examples

• The court ruling served as an invalidator of the previous contract.
• Software bugs can act as invalidators of test results.
• The new evidence became an invalidator of his alibi.
• Technical errors were the primary invalidator of the experiment.
• The lawyer argued that the witness was an invalidator of the defendant’s claims.
• Missing signatures served as invalidators of the legal documents.