Tomcat rhymes with:
bobcat, copycat, kitcat, polecat, pussycat, thundercat, wildcat, acrobat, aerostat, aristocrat, autocrat, babysat, bobcat, brickbat, bundesrat, bureaucrat, butterfat, carlstadt, caveat, chitchat, clarostat, compumat, copycat, d'etat, darmstadt, democrat, diplomat, doormat, eberstadt, eizenstat, estedat, farhat, format, habitat, inverlat, karstadt, kitcat, laundromat, lestat, muskrat, parmalat, placemat, plutocrat, polecat, pussycat, ronstadt, rosenblatt, technocrat, thermostat, thundercat, urstadt, verhofstadt, wesat, wildcat, wombat, yediyat, ziggurat
Tomcat sounds like:
tanked, tannest, teenaged, tenacity, thanked, thinnest, tinged, tiniest, tomasetti, tomassetti, tongued, toniest, tonight, tungate, tunicate, twinjet