Hitachi rhymes with:
antonacci, bacci, banacci, bonacci, bracci, canace, caracci, chachi, chatihachi, degrace, depace, farace, faraci, farinacci, fibonacci, gerace, geraci, graci, hibachi, karachi, lagace, liberace, lupinacci, maniaci, mariachi, menapace, morace, paci, saatchi, schillaci, starace
Hitachi sounds like:
haddock, hades, haithcock, haiti's, haitis, hat's, hatch, hatch's, hatches, hates, hathaway's, hathcock, hats, hattusas, hatz, haydock, hayduk, head's, headache, headaches, headcheese, heads, heat's, heath's, heathcock, heats, hedge, hedgecock, hedgehog, hedgehogs, hedges, hedtke, hedwig, hedwiga, heeds, heidi's, heitz, hettick, hetz, hewitt's, hiatt's, hiatus, hideaki, hideous, hideouts, hides, hitch, hitchcock, hitchcock's, hitches, hitchhike, hitchhikes, hites, hitoshi, hits, hitz, hodak, hodes, hodge, hodge's, hodges, hodgkiss, hoods, hoots, hotcake, hotcakes, hotchkiss, hotdog, hotdogs, hothouse, hothouses, hots, hotz, hotze, houdek, houts, houtz, howtek, hud's, hudak, hudec, hudecek, hudek, hudock, hudzik, hut's, hutch, huts, hutu's, hutus, hyades, hyatt's, hyde's, hydock