The word internationalities cannot be made in Words With Friends™. It is 18 letters long, too long to fit on a WordsWithFriends board (15 letters max).
Highest Scoring Words With Friends™ Plays In The Letters internationalities
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Seven Letter Word Alert: (246 words)
aeolian, aerates, aerials, aeriest, aileron, airiest, airline, alanine, altoist, aniline, anneals, anoints, antenna, antlers, antlion, antsier, arenite, areolae, areolas, areoles, arsenal, artiest, artisan, asinine, atoners, atonias, atresia, attains, attelet, attires, attrist, attrite, earnest, eastern, elastin, elaters, elation, elision, elitist, enolase, enolate, ensnare, ensnarl, entails, enteral, entitle, entrain, entrant, entreat, entries, erotise, estriol, estrone, etaerio, eternal, ileitis, inertia, initial, inlines, inosine, inosite, insaner, instant, instate, intense, intents, interns, intoner, intones, intorts, introns, iolites, ioniser, iratest, irisate, ironies, isolate, iterate, lantern, lariats, lateens, latents, latites, latrine, leaners, leanest, leantos, lenient, lenites, letters, liaison, lineate, linnets, lintier, lionets, lionise, litters, loaners, loiters, nailers, nailset, nannies, nastier, nations, natters, nattier, nearest, neatens, neatest, neonate, netters, nettles, nitrate, nitrene, nitrite, nittier, noisier, nonanes, nonarts, nonenes, nonlate, nonliar, nonreal, nonsale, nonsane, norites, nostril, oiliest, oleates, onliner, orients, orleans, otarine, rations, ratline, rattail, rattles, rattons, realest, realise, realist, relates, relents, reliant, relines, reloans, renails, rennets, rennins, rentals, reslant, restain, restate, retails, retains, retaste, retiles, retilts, retinal, retinas, retinol, retints, retitle, retoast, retotal, roseate, roselet, rosette, rotates, salient, saltate, saltern, saltier, satiate, sealant, sealion, senator, seriate, settler, siltier, sirloin, slatier, slitter, snotter, stainer, starlet, starlit, startle, station, stealer, sterane, sterile, sternal, stilter, stonier, straint, striate, tailors, talents, tanners, tannest, tannins, tartans, tartest, tartlet, tastier, tatters, tattier, tattler, tattles, teleost, telnets, tenants, tenners, tensile, tension, tenters, tentier, ternate, tertial, testate, testier, tilters, tiniest, tinners, tinnier, tinters, tintier, titlist, titrate, titters, toaster, toenail, toilers, toilets, tonette, totters, trainee, transit, treason, trenail, trestle, triaene, trienes, triones, tsarina