veto

Meanings

1. A political right to disapprove of (and thereby stop) the process of a decision, a law etc.
2. An invocation of that right.
3. An authoritative prohibition or negative; a forbidding; an interdiction.
4. A technique or mechanism for discarding what would otherwise constitute a false positive in a scientific experiment.

1. To use a veto against.
2. To countermand.

Etymology

From Latin vetō (“to forbid”).