Tho rhymes with:
although, though, aglo, aglow, ago, although, apropos, arnaud, arnault, au, aux, badeau, badeaux, barbeau, beau, beaudreau, beaux, bebeau, begnaud, belleau, below, bestow, bibeau, bibeault, bio, biscoe, bleau, blincoe, blow, blowe, bo, boe, boeh, boileau, boisseau, bonneau, bordeau, bordeaux, boudreau, boudreaux, bourbeau, bourdeau, bourgault, bowe, brancheau, brasseaux, brazeau, breau, breault, breaux, brideau, bro, broe, brosseau, brousseau, browe, bruneau, brusseau, budreau, buteau, cabo, campeau, chabot, champeau, changsho, chateau, chateaux, chau, chenault, cho, choe, cloe, clow, co, coe, cointreau, comeau, comeaux, compeau, cousteau, crepeau, cro, croteau, crotteau, crow, crowe, daignault, daigneault, dau, davao, davault, deboe, dedeaux, defoe, denault, deneau, deneault, devault, devaux, deveau, deveaux, devoe, doe, doh, dough, drapeau, dubeau, dufault, dunno, dussault, dusseau, dusseault, eau, eaux, eeo, enloe, enlow, enslow, escoe, escrow, ex-voto, facteau, faucheux, faurot, fauteux, favreau, fecteau, flo, floe, flow, flowe, foe, forego, forgo, fregeau, fro, froh, furlaud, garceau, gareau, garneau, gateau, gau, gaudreau, gauthreaux, gautreau, gautreaux, gauvreau, gendreau, georgiou, gibeau, gibeault, giraud, glo, gloe, glow, go, godot, goe, gogh, goh, goudeau, goudreau, gro, groh, groleau, grow, growe, guandjo, guilbault, guilbeau, guilbeault, guilbeaux, guillot, hello, ho, hoe, hoh, hoho, hurteau, hwang-ho, inco, inlow, inscoe, ivo, jacquot, jandreau, jarreau, jo, joe, joh, kayo, know, ko, koh, krogh, kroh, krowe, kyo, labeau, lafoe, lambeau, lambreau, lareau, laveau, lebeau, lebow, lebowe, ledlow, legault, leleux, lettau, lheureux, lienau, lo, loe, loh, low, lowe, lozeau, luo, m'bow, malveaux, manseau, marceau, marceaux, margaux, mau, mayeux, mealo, meaux, michaud, michaux, micheaux, migneault, mineau, mo, moe, monceaux, mongeau, monroe, moreau, morneau, morneault, mousseau, mow, munro, nadeau, nau, neault, nedeau, neveau, ngo, no, noe, noh, nouveau, o, o', o., oh, outgrow, ow, owe, papo, pernod, perot, perreault, peugeot, pineau, plateau, po, poe, poh, primeau, primeaux, pro, pruneau, queau, quo, rambeau, reaux, renaud, renault, reneau, rheault, rho, rideau, rideaux, riendeau, ro, roe, roh, rohe, rondeau, rougeau, rouleau, rousseau, row, rowe, schau, sew, sgro, show, sloe, slow, snow, snowe, so, so-so, soco, soileau, stow, stowe, stroh, strow, tableau, tableaux, taekwondo, tallyho, tarot, tebeau, tetreault, thebeau, theriault, therriault, thibault, thibeau, thibeaux, thiebaud, thoreau, though, throw, thurnau, toe, tondreau, tow, towe, trow, trudeau, truffaut, tso, turbot, undergo, ungo, uno, valleau, van-gogh, veilleux, viau, vieau, vienneau, vigneau, vigneault, vo, whoa, wo, woe, wroe, yau, yo, yoe, yoh, zoh
Tho sounds like:
t, t., ta, tad, tada, tadd, taddei, taddeo, taddy, tae, taewoo, tahiti, tahoe, tai, tait, taite, taitt, taiyo, tao, tat, tata, tate, tateho, tattoo, tattooed, tatty, tatu, taut, tay, te, tea, teat, teate, ted, teddie, teddy, tee, teed, teet, teeth, teethe, teo, tet, teta, tete, teti, tew, th, thad, thada, thadda, thaddea, thai, thao, that, that'd, thau, thaw, thawed, the, thea, theda, thede, thee, theo, theta, thew, they, they'd, thi, thiede, thode, thou, thud, thuot, thuy, thweatt, thy, ti, tia, tidd, tide, tidy, tie, tied, tiede, tiedt, tieu, tit, tita, tithe, tito, to, toa, toad, tod, toda, today, todd, todt, toe, toed, toity, too, toohey, toot, toote, tooth, toothed, toothy, tot, tota, tote, toted, toth, toti, toto, totty, touhey, tout, touted, tow, towe, towed, towey, toy, toya, toye, toyed, toyo, toyoda, toyoo, toyota, tu, tude, tue, tuite, tuohey, tuohy, tut, tutt, tutti, tutu, twedt, tweed, tweedie, tweedy, tweet, twiddy, twite, twitty, two, ty, tye, tyo