Checkups rhymes with:
backups, buttercups, eggcups, hookups, linkups, markups, pickups, shakeups, backups, buildups, buttercups, cleanups, coverups, eggcups, grownups, hangups, holdups, hookups, lineups, linkups, markups, pickups, push-ups, pushups, runups, setups, shakeups, startups
Checkups sounds like:
cab's, cabbage, cabbages, cabbies, cabezas, cabok, caboose, cabooses, cabs, cafes, cap's, capacious, capasso, capece, capeci, capek, capes, capizzi, capozzi, capps, cappuccio, cappy's, caps, capshaw, capsize, cavaco, cavazos, cave's, caves, cbs, cebu's, cephas, cephus, cevaxs, chacabuco, chafee's, chafes, chapas, chapek, chappuis, chaps, chaves, chavez, chavis, chavis', chavous, checkbook, checkbooks, chef's, chefs, chekhov's, chesapeake, cheves, chevies, chevik, chevis, chevy's, chevys, chiapas, chiapas', chief's, chiefs, chiefs', chip's, chipps, chips, chivas, chives, chop-suey, chops, chopsuey, chubais, chubb's, chubbuck, ciba's, civic, civics, cobaugh, cobbs, cobos, cobs, cobwebs, coffee's, coffeehouse, coffeehouses, coffees, cookbook, cookbook's, cookbooks, coovick, copas, copco, copes, copiague, copies, copious, coppage, coppess, coppock, copps, cops, copsey, copus, cosby's, coupes, coups, covas, coves, cowboy's, cowboys, cowboys', cuba's, cubbage, cubbies, cubes, cubic, cubic's, cubs, cubs', cuevas, cuffs, cupcake, cupcakes, cupps, cups