Fitz rhymes with:
befits, fits, fitts, acquits, admits, befits, berlitz, bits, bitz, blitz, brits, britts, britz, chits, commits, critz, emits, fits, fitts, frits, fritts, fritz, glitz, grits, gritz, hits, hitz, hritz, it's, its, kits, kitts, kitz, klitz, knits, kritz, lits, litts, litz, mitts, moritz, nitz, omits, ovitz, permits, pits, pitt's, pitts, pitz, pritts, pritz, quits, ritt's, ritts, ritz, schlitz, schmidt's, schmitz, schnitz, sits, sitts, sitz, skits, slits, smits, spits, spitz, splits, stitz, submits, transmits, tritz, wit's, wits, witts, witz, writs
Fitz sounds like:
faddis, faddish, fades, fads, faiths, fates, fatigue, fatigues, fats, fatties, fatuous, fauteux, fayed's, feats, fed's, fedak, fedex, feds, feeds, feith's, feitz, fetch, fetches, fetish, fetsch, fetsko, fettes, fettig, fetus, fetuses, fetz, feuds, feutz, fiat's, fides, fifths, fifties, fifty's, fitak, fitch, fites, fits, fitts, fitzco, fitzhugh, food's, foods, foods', foodways, footage, foote's, fotis, foutch, fouts, foutz, fudge, fudgy, futch