Kappus rhymes with:
lapis, pappas, all-purpose, bippus, bumpus, campus, chapas, chiapas, compas, compass, coppess, copus, corpus, encompass, eohippus, gyrocompass, hippocampus, hospice, lapis, lupus, malpass, manglapus, molpus, molpus', mopus, multipurpose, negropalpus, oedipus, olympus, opus, pappas, pompous, porpoise, prapas, precipice, purpose, tapas
Kappus sounds like:
kabuki, kafka, kafka's, kafkaesque, kaposi, kaposi's, kappes, kaps, keeps, keepsake, keepsakes, kepco, kevex, kickback, kickbacks, kiev's, kippes, kishbaugh, kobak, kobayashi, kobe's, kobes, kobs, kobus, kobza, koepke, koop's, koops, kopacz, kopas, kopec, kopecky, kopek, kopeks, kopischke, kopka, kopke, kopko, koppes, kops, kovac, kovach, kovach's, kovacic, kovacich, kovacik, kovack, kovacs, kovaks, kovich, kubacki, kubas, kubes, kubiak, kubic, kubica, kubicek, kubick, kubicki, kubik, kubis, kubisiak, kupek, kupiec, kupka