1 syllable:
-crat, -stat, bat, batt, batte, bhatt, blatt, blatte, brat, bratt, cat, catt, catte, cemat, chat, chatte, dat, dth vsat, fat, flat, flatt, fltsat, gat, gatt, glatt, gnat, gnatt, hat, hatt, hatte, hnat, jagt, jatte, kat, katt, klatt, krat, kratt, lstat, ma'at, mat, matt, matte, nat, natte, njrat, pat, patt, patte, platt, platte, pratt, pratte, rat, ratte, rstat, sat, satte, scat, scatt, schadt, schmatte, scrat, shatt, shmatte, skatt, slaght, slat, slatt, spat, splat, splatt, sprat, spratt, stat, statt, strat, tat, that, tratt, tschat, vat, vrchat

2 syllables:
a-flat, airbat, al-lat, and that, annat, arhat, arnatt, assat, at-bat, b-flat, backchat, bad hat, basel-stadt, bath mat, bearcat, bear cat, beermat, begat, ben platt, biernat, bierstadt, bigfat, big cat, black cat, black rat, blue cat, bobcat, bogmat, bone fat, borat, bougnat, brass hat, brickbat, brown bat, brown rat, bullbat, but that, cadpat, carlstadt, castrat, cave bat, cavtat, cepat, cerat, cerat-, chauchat, chit-chat, chitchat, choueifat, chris pratt, chromat, citat, clam-flat, climat, cluebat, cocked hat, combat, combate, commat, comrat, comstat, comtat, coon cat, cowpat, cuecat, d'etat, darmstadt, debatte, decat, defat, delatte, deslatte, diktat, dingbat, displat, does that, domat, doormat, dorpat, down pat, dress hat, ducat, dutchbat, eclat, eilat, ekkathat, elat, empat, erftstadt, esbat, estat, ex-pat, exfat, expat, explat, fall flat, farhat, fat-cat, fatcat, felt hat, femstat, festplatte, fittrat, floormat, format, forstat, freemat, fruitbat, fruit bat, fur hat, gall gnat, gujrat, hacat, haemat, hallstadt, hard hat, hashcat, hauptstadt, hazmat, heirat, hell-cat, hellcat, hepat, hepat-, hepcat, hereat, hesat, hexchat, high hat, hikmat, hipchat, housecat, house cat, hurlbat, iccat, ichat, impatt, incat, insat, instat, intat, in that, is that, jorhat, karjat, karlstadt, karstadt, keelfat, khilat, kismat, kit-cat, kit-kat, kitcat, korat, kurdsat, labatt, landsat, langsat, leaf fat, legat, lestat, limbat, lippstadt, lokmat, lolcat, low-fat, man-bat, mancat, manx cat, marpat, matpat, mcnatt, mentat, mercat, milkfat, mofat, mole-rat, mole rat, moonbat, motat, mudcat, mudflat, mud flat, mule fat, musk-rat, muskrat, nadsat, navsat, netcat, nilstat, non-fat, nonfat, nopat, noplat, north platte, numbat, of that, on that, optat, orbat, pack-rat, packrat, pack rat, palm cat, pith hat, pitpat, placemat, place mat, plug hat, pneumat, pneumat-, polecat, popat, porat, prayer mat, prevatt, prevatte, prostat-, qismat, rat-tat, redcat, redhat, red bat, reichsrat, rice rat, ronstadt, roof rat, rugrat, run-flat, sabbat, sadat, sairat, saltcat, sam & cat, sand cat, sand rat, sarratt, sarsat, schallplatte, seacat, sea mat, sebat, sehcat, shtrafbat, sifat, sigcat, silat, silk hat, slouch hat, smartcat, snapchat, sno-cat, snowcat, socat, somat, south platte, specat, sphynx cat, standpat, stand pat, starsat, stonecat, straw hat, stripchat, such that, susat, tapat, therat, thereat, tib-cat, tin hat, tipcat, tomat, tomcat, topcat, top hat, torchat, to that, trade rat, traumat, true cat, tvsat, uncat, unhat, unplat, urstadt, verrat, wall-plat, weechat, werecat, wesat, wharf rat, whereat, whirlbat, wild-cat, wildcat, wing flat, with that, wombat, wood-rat, woodchat, wood rat, wool fat, worldcat, youcat, zermatt

3 syllables:
abitat, achromat, acrobat, acupat, adigrat, aegrotat, aerobat, aerostat, akkurat, akrobat, alley-cat, alleycat, alley cat, ameretat, amphicat, andermatt, antifat, aparat, apitpat, apparat, ariat, aromat, asiat, assignat, aufsichtsrat, autocrat, autokrat, automat, autostadt, autostat, aviat, baby-sat, babysat, ballarat, balyeat, bancomat, bankomat, barostat, baseball bat, batibat, beaver rat, become flat, bellingcat, bell the cat, bengal cat, big brown bat, bishop's hat, bowler hat, bundesrat, bureaucrat, burmese cat, butterfat, camostat, campaign hat, caveat, channel cat, chemostat, chow yun-fat, civet cat, clarostat, clinostat, cocomat, compumat, concinnate, copycat, cosmocrat, cotton rat, coup d'etat, cowboy hat, cricket bat, cryostat, cryptocat, democrat, demokrat, desert rat, despotat, dichromat, diplomat, dixiecrat, doja cat, dolcelatte, durrenmatt, eberstadt, eizenstat, en-mishpat, entheat, ergostat, estedat, ethercat, fantomcat, filderstadt, firebrat, fisher cat, flying cat, fort-la-latte, fotomat, fraidy-cat, frankenstrat, frosted bat, fungistat, fungus gnat, gfycat, gib-cat, gornergrat, guano bat, guerguerat, gujarat, gujerat, gyrostat, habitat, haemostat, he's all that, hemostat, hesse-darmstadt, himavat, hognose bat, horseshoe bat, howeitat, hydrostat, hygrostat, hyperstat, ingolstadt, inmarsat, inverlat, iostat, jackass bat, josaphat, jungle cat, kattegat, kattegatt, ketupat, khubsoorat, kitty-cat, klinostat, kolovrat, kompromat, kurzgesagt, large-format, latitat, laundromat, leopard cat, leopoldstadt, maltese cat, marrowfat, marten cat, mastiff bat, meercat, megabat, microbat, miner's cat, minorat, mobocrat, monistat, monocrat, monsarrat, monstercat, montferrat, native cat, new world chat, nikkormat, nitrostat, noncombat, norway rat, ochlocrat, ocicat, old world chat, opera hat, orange bat, orlistat, orthostat, pallas's cat, pallid bat, panamsat, pancreat, pancreat-, panipat, panther cat, parmalat, persian cat, photostat, picture hat, pit-a-pat, pitapat, pitty-pat, pizza rat, plutocrat, pocket rat, pulicat, pussycat, pyrostat, railroad flat, rampurhat, rat-a-tat, rat-tat-tat, reformat, reostat, rheocrat, rosenblatt, safety hat, scaredy-cat, semarnat, semimat, semimatte, sewer rat, shaktipat, she's all that, shovel hat, slavocrat, splintercat, spotted bat, superflat, superstrat, suricat, tabby cat, tablemat, table mat, technocrat, thefatrat, theocrat, thermostat, thundercat, tiger cat, tinychat, tit-for-tat, tittlebat, tit for tat, trichromat, under that, unimat, vampire bat, vanderjagt, velostat, verhofstadt, water mat, water rat, welcome mat, westerplatte, what does that, wikistrat, windirstat, winefat, woman's hat, wrestling mat, wurstsalat, yediyat, ziarat, ziggurat, zikkurat, zikurat

4 syllables:
al-adiyat, amadavat, and just like that..., angora cat, animal fat, apochromat, apostolat, aristocrat, aristokrat, avadavat, blepharostat, blue channel cat, buffalo gnat, calico cat, cavalier hat, cephalostat, chinchilla rat, cobicistat, coelostat, data format, domestic cat, dwarf pocket rat, edible fat, egyptian cat, false vampire bat, febuxostat, gamarjobat, gerontocrat, hierogrammat, humidistat, intercombat, jehosaphat, judeo-tat, junooniyat, kangaroo rat, little brown bat, mabalacat, magnificat, masterformat, meritocrat, mexican hat, microformat, monochromat, mortal combat, naked mole rat, oliver platt, opossum rat, physiocrat, pocketed bat, potentiostat, priya bapat, raaz-e-ulfat, rat-a-tat-tat, reichskonkordat, roxadustat, serhetabat, shammuramat, siamese cat, supayalat, thalassocrat, tortoiseshell-cat, true vampire bat, vagharshapat, vorinostat

5 syllables:
bacteriostat, carnivorous bat, casey neistat, catheterostat, commissariat, grumman f6f hellcat, ilta-sanomat, madagascar cat, male aristocrat, marsupial rat, microhabitat, mutessarifat, orange horseshoe bat, ord kangaroo rat, panobinostat, schwarzburg-rudolstadt, wechselapparat

6 syllables:
alexandre desplat, autoexec.bat, dilraba dilmurat, european brown bat, european wildcat, female aristocrat, florida water rat, grumman f-14 tomcat, reichskommissariat

7 syllables:
palaeologus-montferrat

8 syllables:
landkreuzer p. 1000 ratte