take, claim, seize, etc. the moral high groundidiomPart ofgroundtake, claim, seize, etc. the moral high groundtake, claim, seize, etc. the moral high ground — idiomidiom1. To claim that your side of an argument is morally better than the other side.1.idiomDefinitionTo claim that your side of an argument is morally better than the other side.ExampleShe tried to take the moral high ground in the debate.He seized the moral high ground by donating to charity.