Nappier rhymes with:
frappier, happier, copier, dampier, frappier, grumpier, happier, lapier, napier, photocopier, rapier, skimpier, sloppier
Nappier sounds like:
naber, napier, napora, napper, navar, navarra, navarre, navarro, neeper, neibauer, neubauer, neuber, never, newbauer, newberry, newbery, newbury, niebauer, niebuhr, niebur, nienaber, nipper, niver, noboru, nonmember, npr, nuber, nufer, nuffer, nuhfer, number