Tosca rhymes with:
alaska, alyeska, aska, becka, bouska, bresca, brusca, brzoska, cerska, chaska, francesca, frasca, galuska, gasca, gaska, haluska, houska, hrdlicka, hruska, huska, itasca, jedlicka, kalkaska, karolinska, kaska, kiska, kleczka, koska, kraska, kvasnicka, lasca, laska, liska, maresca, maruska, matuska, mikeska, miska, mosca, muska, nasca, nebraska, noska, o'marska, omarska, petruska, pisca, pliska, podleska, poduska, prochaska, prohaska, raska, serbska, siska, skandinaviska, skanska, srpska, studnicka, svenska, tasca, teska, transalaska, triska, trzaska, valeska, ventresca, vogosca, ziska
Tosca sounds like:
t's, t.'s, t.s, tac, tacey, tack, tacke, tacks, tacky, taco, tacos, tacy, tadashi, tadeusz, tadic, tadych, taegu, tag, tagg, tagge, tags, tague, taiko, taisei, taisho, taj, tajik, tak, takach, takacs, takagi, takahashi, takaki, takako, takao, takasago, takashi, take, takei, takeo, takes, takeshi, takeuchi, taki, taki's, takihyo, taku, takushoku, taos, tasca, tasch, tash, tasha, task, tasks, tass, tassi, tasso, tate's, tateho's, tatge, tatsch, tatsukichi, tattoos, tauke, tausch, taussig, tawes, tax, tax's, taxes, taxes', taxi, taxi's, taxis, taxiway, tays, tcas, teac, teach, teaches, teachey, teague, teak, teas, tease, teases, teats, tec, tech, tech's, techie, techies, techs, techy, teck, teck's, teco, tecos, ted's, teddy's, tedeschi, tedesco, tedesco's, tedious, tees, teets, tegge, teich, teig, teige, teikoku, tejas, tek, tesch, tesco, tese, tesh, teska, teske, tess, tessa, tessick, tessie, tessy, tetsuji, tetsuo, teutsch, tewes, tews, tex, texaco, texaco's, texas, texas', texas's, tezak, thach, thaddeus, thai's, thais, thassos, that's, thatch, thatches, thaws, theda's, theis, theiss, theo's, these, theses, thesis, thetis, theus, thick, thies, thigh, thighs, this, those, though, thous, ths, thug, thugs, thus, tic, tice, tichy, tick, ticks, tics, tides, tiegs, ties, tietje, tietz, tietze, tig, tigges, tiggs, tighe, tigue, tike, tikes, tiki, tis, tisch, tisch's, tish, tish's, tissue, tissues, tito's, titus, tizzy, tkach, tkacz, toads, tocci, tocco, tock, toczek, today's, todays, todd's, todi's, todisco, toes, toews, toga, togo, togs, tokai, tokio, tokos, tokuo, tokyo, tokyo's, tokyu, took, tooke, tookes, toots, tootsie, tosch, tosco, tosh, toshihiko, toshiki, toshio, toshiyuki, tosi, toso, toss, tosses, totes, tots, totzke, touch, touche, touches, touchy, tougas, tough, toughie, toughs, tousey, toussie, touts, tows, toxic, toxics, toy's, toyko, toyota's, toyotas, toys, toys', tozzi, ts, tsai, tsai's, tsakos, tsao, tse, tso, tsu, tsui, tsuji, tt's, tucci, tucci's, tucek, tuch, tuck, tuckey, tucks, tudisco, tug, tugs, tuk, tuks, tusa, tush, tushes, tusk, tuskegee, tusks, tussey, tut's, tutko, tutsi, tutsi's, tutsis, tux, twas, tweak, tweaks, twice, twig, twigg, twiggs, twiggy, twigs, twiss, twitch, twitches, two's, twohig, twos, ty-sachs, tyce, tyco, tyco's, tyke, tyus, t_a_c