Swap/swɑːp/ Definition 1 of 4Pro Tip 1/3Equitable Trade Use 'swap' when trading items of similar value or interest without money involved. Let's swap stickers; I'll give you a lion for your elephant. Pro Tip 2/3Mutual Agreement 'Swap' implies both sides agree to the trade; it's not forced or one-sided. Jack and I agreed to swap lunch boxes today. Pro Tip 3/3Temporary Exchange Swaps can be temporary, with the intention of trading back later. Can we swap bikes for our ride today?