›[I or T]to change, or make a situation, price, opinion, etc. change in a noticeable way: swing into profit/deficit The internet company swung into profit for the first time since its start-up. swing from sth to sthThe group swung from losses of 0.8p to earnings of 2.9p a share.The war was the biggest issue threatening to swing voters.
›[T]to achieve the result you want, especially by successfully persuading someone of something: The bidder was presented with a list of added benefits that would help swing the deal in their favour.