Nope rhymes with:
knope, bronchoscope, cope, dope, elope, groep, grope, hope, knope, koep, koepp, koeppe, kope, lope, mope, pope, rope, schoepe, schoepf, schoepp, scope, shope, slope, soap, sope, strope, swope, tope
Nope sounds like:
naab, nab, nabb, nabi, nabob, naef, naeve, naff, naify, naive, nambi, namibia, namphy, nanobaby, nap, napa, napea, napp, nappa, nappi, nappo, nav, nava, nave, navy, neave, neeb, neef, neff, nepa, nephew, neuhoff, neva, neve, neveau, neveu, newbie, newby, newwave, nib, nibbe, niehoff, nimby, nineveh, nip, nipp, nippy, nobbe, nobuo, nouveau, nov, nova, novey, novi, novia, novo, novoa, novy, nub, nuevo, numb, nuova, nuovo, nymph