From Longman Dictionary of Contemporary Englishoverturn a decision/verdict etcoverturn a decision/verdict etcCHANGE/MAKE something DIFFERENTto change a decision or result so that it becomes the opposite of what it was before His conviction was overturned by the Court of Appeal. → overturn
Examples from the Corpus
overturn a decision/verdict etc• The High Court has overturned decisions made by secretaries of state. 