If administrators find out that students cheated on a test, the school might invalidate their class grades. To invalidate means to cancel something or make it void, as if it never happened.
To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow;
Verb
take away the legal force of or render ineffective; "invalidate as a contract"
Verb
show to be invalid
Verb
of cheques or tickets
Verb
declare invalid; "The contract was annulled"; "void a plea"
v. t.
To render invalid; to weaken or lessen the force of;
to destroy the authority of; to render of no force or effect; to
overthrow; as, to invalidate an agreement or argument.
Invalidate
To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow;
Usage Examples
Straight couples don't have to be monogamous to be married or married to be monogamous. Monogamy no more defines marriage than the presence of children does. Monogamy isn't compulsory and its absence doesn't invalidate a marriage.
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Other Usage Examples