gazump
verb [usually passive] (British English)- gazump somebody
when somebody who has made an offer to pay a particular price for a house and who has had this offer accepted is gazumped, their offer is no longer accepted by the person selling the house, because somebody else has made a higher offer （房价议定后因有人出价更高而向买主）食言毁约 Word Origin1920s (originally meaning to swindle someone): from Yiddish gezumph ‘overcharge’. The current sense dates from the 1970s.