swap

UK: /ˈswɒp/ US: /swɑp/ ,(swop)

Inflections of 'swap' (v): (⇒ conjugate)

swaps

v 3rd person singular

swapping

v pres p

swapped

v past

swapped

v past p

WordReference Random House Learner's Dictionary of American English © 2025

swap /swɑp/   v., swapped, swap•ping, n. 
v. 

1. to trade or barter;
   make an exchange: [~ + object]
   They sat on the bench, swapping lies about the good old days.
   [~ + object + for + object]
   I'll swap my orange for your apple.
   [no object]
   You like my cookies and I like yours; let's swap.

n. [countable]

2. an exchange:
   He got the radio in a swap.

WordReference Random House Unabridged Dictionary of American English © 2025

swap (swop),  v., swapped, swap•ping, n. 

v.t. 

1. to exchange, barter, or trade, as one thing for another:
   He swapped his wrist watch for the radio.

v.i. 

2. to make an exchange.

n. 

3. an exchange:
   He got the radio in a swap.

Also, swop. 

• 1300–50; Middle English swappen to strike, strike hands (in bargaining); cognate with dialect, dialectal German schwappen to box (the ears)

swap′per, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

swap, swop / swɒp/ verb (swaps, swapping, swapped, swops, swopping, swopped)

1. to trade or exchange (something or someone) for another

noun

1. an exchange
2. something that is exchanged
3. Also called: swap option, swaption a contract in which the parties to it exchange liabilities on outstanding debts, often exchanging fixed-interest-rate for floating-rate debts (debt swap), either as a means of managing debt or in trading (swap trading)

Etymology: 14th Century (in the sense: to shake hands on a bargain, strike): probably of imitative origin

ˈswapper, ˈswopper noun