BELOW THE BELT

{adv. phr.} 1. In the stomach; lower than is legal in boxing. * /He struck the other boy below the belt./ 2. {informal} In an unfair or cowardly way; against the rules of sportsmanship or justice; unsportingly; wrongly. * /It was hitting below the belt for Mr. Jones's rival to tell people about a crime that Mr. Jones committed when he was a young boy./ * /Pete told the students to vote against Harry because Harry was in a wheelchair and couldn't be a good class president, but the students thought Pete was hitting below the belt./