1 syllable:
aaass, aase, blas, bloss, boiss, bos, boss, boss', bosse, bras, bross, cauce, clauss, clos, closs, cos, coss, cosse, cros, cross, cross-, crosse, daas, dazs, doss, dross, fause, fauss, fausse, floss, flosse, foss, fosse, fross, glauce, gloss, gloss-, glosse, goss, gosse, grosse, haas, haase, haass, hahs, hasse, hnoss, hoss, jboss, joss, josse, kaas, kjos, klaas, klos, kloss, knauss, knous, kos, koss, kosse, krause, krausse, kross, las, loss, maass, mauss, mohs, mos, moss, mosse, motss, nauss, noss, os, oss, pdd nos, phos-, ploss, pos, poss, pross, quass, rnaase, ros, ross, ross', rosse, sauce, schloss, sloss, soss, spross, stauss, stoss, swass, toss, tosse, tross, vause, vohs, vos, voss, vyas, wasce, wass, yoss, zoss

2 syllables:
abbas, acoss, across, alsace, amboss, ammas, amoss, atroce, back-cross, backcross, beard moss, ben cross, beschloss, beschloss', betoss, bigg boss, black moss, bog moss, bombas, bonasse, bread sauce, brown sauce, bugloss, caguas, cedras, cedras', chandross, chavous, cheese sauce, chiasse, christcross, club-moss, clubmoss, club moss, coloss, colosse, cream sauce, criss-cross, crisscross, culross, cup-moss, danfoss, deboss, demoss, devoss, disoss, ditchmoss, dobcross, duck sauce, ecosse, emboss, endoss, erdgeschoss, feroce, fudge sauce, girlboss, gotaas, greek cross, hamas, hamas', hammas, hammas', hard sauce, hooplas, hot-cross, hot sauce, iapss, imboss, incross, kiryas, koloss, kosmas, kutauss, la-crosse, lacoss, lacross, lacrosse, lafosse, la crosse, lip-gloss, lipgloss, loanloss, long moss, macross, mint sauce, molosse, nahuas, oakmoss, otpotss, outcross, pangloss, pataas, patasse, peach sauce, peat moss, plum sauce, recross, red cross, retoss, rick ross, ringtoss, rose moss, rubasse, scale moss, sea moss, shallcross, shavous, shawcross, shrimp sauce, sinterklaas, soysauce, soy sauce, spectros, spikemoss, spike moss, starcross, steak sauce, stop-loss, straw boss, terrasse, test-cross, testcross, tomas, trail boss, twycross, uncross, vandross, vanoss, veloce, vsauce, warcross, waycross, white sauce, wine sauce

3 syllables:
adin ross, albatross, applecross, applesauce, apple sauce, april ross, arctic moss, arkansass, aruldoss, at a loss, auchincloss, autocross, barabbas, betsy ross, candyass, candyfloss, caper sauce, celtic cross, chihuahuas, chili sauce, chocolate sauce, cocktail sauce, come across, contrebasse, curry sauce, cut across, cyclo-cross, cyclocross, demitasse, dental floss, desmond doss, double-cross, doublecross, double cross, fairyfloss, floating-moss, garlic sauce, genus bos, get across, go across, hearing loss, helios, holycross, hugo boss, hunter's sauce, iceland moss, intercross, irish moss, isogloss, karakos, katharine ross, kephalos, kyla ross, ladislaus, latin cross, lazyass, leineschloss, look across, lorraine cross, maltese cross, market cross, motocross, mushroom sauce, mustard sauce, navy cross, neuromas, newburg sauce, northern cross, omahas, omphalos, papal cross, paraguas, party boss, pass across, pasta sauce, pepper sauce, phelios, piraguas, pitch-and-toss, polocrosse, precognosce, put across, rallycross, randolph ross, recognosce, reindeer moss, run across, sarah knauss, seafood sauce, semi-gloss, semigloss, single-cross, sint-niklaas, southern cross, spanish moss, srinivas, stanislaus, stelios, stonetoss, supercross, taco sauce, tartar sauce, underboss, virtuos, wenceslaus

4 syllables:
abul-abbas, anchovy sauce, apricot sauce, atticus ross, barbecue sauce, bourguignon sauce, brown onion sauce, bucephalos, burgundy sauce, calvary cross, capital loss, carrickmacross, carrie-anne moss, charity toss, chinese brown sauce, cirsomphalos, cranberry sauce, encephalos, exomphalos, financial loss, helluva boss, horseradish sauce, insane clown posse, little club moss, lyonnaise sauce, marion ross, memory loss, mushroom win sauce, paprika sauce, profit and loss, put one across, sign of the cross, spaghetti sauce, tabasco sauce, tomato sauce, white onion sauce

5 syllables:
betsy griscom ross, elisabeth moss, hungarian sauce, jerusalem cross, low st andrew's cross, patriarchal cross, political boss, stations of the cross, tracee ellis ross, tyler winklevoss, victoria cross

6 syllables:
cameron winklevoss, conductive hearing loss, distinguished flying cross, distinguished service cross, murder of polly klaas, wandering albatross

7 syllables:
bolognese pasta sauce

1 syllable:
thoughts

5 syllables:
in everyone's thoughts