Whoop rhymes with:
swoop, swoope, alleyoop, arup, boop, coop, coupe, croup, doupe, droop, drupe, dupe, goop, group, groupe, grupe, guadalupe, guadeloupe, hoop, houp, hupe, intergroup, knoop, koop, loop, loup, loupe, lupe, oop, poop, recoup, regroup, roop, roope, roupe, rupe, scoop, shoop, shoup, shoupe, shupe, sloop, snoop, soup, stoop, stoup, stroop, stroope, stroup, stroupe, swoop, swoope, throop, troop, troup, troupe
Whoop sounds like:
wah-pei, waif, waive, wave, wavy, we've, weave, web, webb, weep, weepy, whiff, whip, whipp, who've, whoopee, whoopi, whoopie, wiebe, wife, wipe, wipf, wobbe, woof, wop, wove