01 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 inv…
imp. & p. p.
Invalidated; p. pr. & vb. n.
Invalidating
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1.
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.