Hypoxia rhymes with:
eudoxia, alexia, anorexia, ataxia, dyslexia, eudoxia, alexia, alicea, aloisia, aloysia, alysia, anorexia, ataxia, blasia, celosia, dambrosia, derosia, dosia, dulcea, dyslexia, echinacea, elsea, eudosia, eudoxia, gelasia, grassia, horacia, iglesia, intelligentsia, licea, pharmacia, plescia, rasia, rossiya, valencia
Hypoxia sounds like:
habeas, habeck, habich, habig, habs, hafez, haffez, hafif's, hapag, hapke, hauppauge, havas, haves, havis, havoc, hbox, heaps, heaves, heavies, hibaaq, hibachi, hibbs, hippies, hippos, hipps, hips, hives, hoback, hobaugh, hobbes, hobbies, hobbs, hoboes, hobs, hoefs, hoffa's, hoofs, hoopes, hoops, hooves, hope's, hopes, hopke, hoppes, hopps, hops, hovious, hovis, hubbs, hubco, hubka, hubs, huebsch, huff's, huffs, huffy's, hypes