Thein rhymes with:
affine, align, aline, assign, benign, bodenstein, bornstein, brine, bryne, cline, clyne, confine, consign, decline, define, design, devine, dewine, dhein, dine, disincline, divine, ein, emlynne, enshrine, entwine, fein, feyen, fine, gourdine, grine, guynn, hein, heine, heyen, hine, hot-line, huynh, ice-nine, incline, intertwine, jain, klein, kleine, kline, kyne, limine, line, lyne, lysne, macalpine, malign, mine, nadein, nine, opine, pine, prine, pruyn, pyne, quine, realign, reassign, recline, recombine, redefine, redesign, refine, resign, rhein, rhine, rhyne, rine, schein, schlein, sein, sharp-sign, shein, shine, shrine, shyne, sign, sine, spine, stein, stine, strine, styne, supine, swine, thine, tine, trine, twine, tyne, vandine, vanduyn, vanduyne, vine, whine, wine, wyne, zine
Thein sounds like:
taima, taiwan, tam, tama, tamanaha, tamayo, tame, tami, tamiami, tamm, tammany, tammen, tammie, tammo, tammy, tan, tanen, taney, tani, tania, tann, tannen, tanney, tanu, tanya, tatem, tatham, tatiana, tatman, tatom, tatum, tatyana, tawana, tawney, tawny, tayman, teahan, team, teaney, tedium, tedman, teehan, teem, teen, teena, teenie, teeny, tehan, temme, ten, tena, tenn, tenney, tenny, teton, thaden, thain, thaine, tham, than, thane, thanh, thano, thayne, theano, them, theme, then, theon, theone, thiamin, thiem, thieman, thiemann, thieme, thien, thima, thin, thine, thoen, thoene, thom, thoma, thoman, thomann, thome, thommen, thon, thone, thum, thuma, thuman, thumann, thumm, thumma, thun, thune, thyme, tian, tiananmen, tiano, tiedeman, tiedemann, tiein, tieman, tiemann, tien, tienanmen, tim, timan, time, timm, timme, timmeny, timmie, timmy, timon, timoney, tin, tina, tine, tinman, tinney, tinnin, tinnon, tinny, tino, tiny, titan, titania, titanium, titian, titman, titone, todman, tom, toma, tomaino, toman, tome, tomei, tomeo, tomey, tommie, tommy, ton, tone, toney, toni, tonia, tonie, tonini, tonn, tonne, tony, tonya, tooman, toomey, toon, toone, toothman, totem, totman, totten, tottenham, totton, town, towne, townie, toyama, tuhan, tuition, tuma, tuman, tumey, tummy, tuna, tune, tunney, tunny, tuomi, tuten, tutino, tutton, twain, tweten, twin, twine, twomey, twyman, tynan, tyne