swop

= swap.

Swiss roll, switch, switch off, switch on, switch-blade, switch-man, switch-over, switch-yard, switchback, switchboard, switched-on, Switzerland, swivel, swizz, swizzle, swizzle-stick, swollen, swoon, swoop, swoop down on, sword, sword-dance, sword-play, sword-stick, swordfish, swordsman, swordsmanship, swore, sworn, swot, swot (also swotter), swum, swung, sybarite, sybaritic, sycamore, sycophancy, sycophant, sycophantic, sycophantically,