There are multiple definitions - click on the translation that matches your context.

underkjenne

verb

full

overrule

verb

Definitions of overrule

English

(of a judge) to refuse to accept an objection made by an attorney during a trial

The judge overruled the lawyer's objection to the witness' testimony.

English

for a higher court to reverse the judgment of a lower court on a specific issue

The Court of Appeal overruled the preliminary injunction granted by the District Court.