His invaliding on medical grounds relieved him of any further responsibilities in the unit.

By invaliding the old user tokens, the server prevented unauthorized access after the breach.

The committee documented several invalidings in the contract review, prompting a complete rewrite.

During the harsh winter, volunteers regularly visited the invalids to bring warm meals and blankets.

The new evidence invalidates her alibi.

She apologized while invalidating his concerns, which only made the situation worse.

The invalidated ticket was refused admission at the museum entrance.

After the audit, the committee invalidated the contracts that lacked signatures.

The sudden invalidation of his credentials left him unable to access the system.

The system rejected the form because the access code was invalid.