Fat rhymes with:
nonfat, arnatt, at, at-bat, balyeat, bat, batt, batte, begat, bhatt, biernat, blatt, brat, bratt, cat, catt, chat, dat, delatte, deslatte, elat, flat, flatt, gat, gatt, glatt, gnat, gujarat, hat, hatt, hnat, inmarsat, jagt, kat, katt, klatt, krat, kratt, labatt, landsat, mat, matt, matte, mcnatt, nat, nonfat, pat, patt, platt, platte, pratt, pratte, prevatt, prevatte, rat, rat-a-tat, ratte, sarratt, sat, scat, schadt, shatt, slaght, slat, spat, splat, spratt, stat, tat, that, tit-for-tat, tvsat, vat
Fat sounds like:
f'd, fad, fade, faded, faeth, fahd, fait, faith, fata, fatah, fate, fated, fateh, fath, fathi, fatty, fatwa, fauth, favata, fayed, fayette, feat, fed, fede, fedewa, fediay, feed, feet, feit, feith, fete, feted, fetid, fett, fette, fetty, feud, feuded, fiat, fiato, fidata, fide, fido, fiftee, fifth, fiftieth, fifty, fit, fite, fithe, fitt, fitted, food, foodie, foodway, foot, foote, footed, foth, foti, fouad, fout, fouty, foyt, fuddy, fudo