Navis rhymes with:
tavis, alvis, avis, bavis, bevis, chavis, chavis', chevis, chevys, clovis, divis, dravis, elvis, elvis', foodservice, havis, hovis, jervis, kendavis, kravis, lavis, levis, mavis, mervis, nankervis, nevis, orvis, pendarvis, purvis, reavis, revis, sarvis, servis, serviss, silvis, tavis, tevis, travis
Navis sounds like:
nabisco, nabisco's, nabobs, nafco, namibia's, napco, naps, navajo, navajos, navas, navickas, navies, navy's, neaves, nephew's, nephews, neves, nevis, nevius, nibs, nieves, nimbus, nips, nipsco, nobec, nobec's, nobis, nobuaki, nobuyuki, noffke, nova's, novacek, novack, novak, novak's, novakowski, novas, novice, novices, novick, novicki, novo's, nymphs