Oop rhymes with:
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, 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
Oop sounds like:
o'five, oba, obey, obie, oboe, of, off, ohba, ooph, op, opie, opp, ova