The word internationalised cannot be made in Words With Friends™. It is 17 letters long, too long to fit on a WordsWithFriends board (15 letters max).
Highest Scoring Words With Friends™ Plays In The Letters internationalised
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Seven Letter Word Alert: (438 words)
adenine, adonise, adrenal, aediles, aeolian, aerated, aerates, aerials, aeriest, aileron, airdate, airiest, airline, airside, alanine, alerted, aliased, altered, altoist, andante, andiron, aneroid, anilide, aniline, aniseed, anneals, annelid, anodise, anoints, antenna, antlers, antlion, antsier, arenite, areolae, areolas, areoles, aridest, arsenal, artiest, artisan, asinine, astride, astroid, atoners, atonias, atresia, attains, attends, attired, attires, dailies, dairies, daltons, dataset, dealate, dealers, dearest, dearies, deities, delates, delator, delints, deliria, deltate, denarii, denials, deniers, denoise, denotes, dentals, dentate, dentils, dentine, dentins, dentist, derails, destain, destine, details, detains, detents, detorts, detrain, dialers, diaries, diarist, diester, dieters, dieties, dietine, dietist, dilater, dilates, dilator, dinners, diorite, dirties, disrate, distant, distort, ditsier, ditties, dittoes, doilies, donairs, donates, dotiest, dotters, dottier, dottles, earnest, eastern, edition, editors, elastin, elaters, elation, eleidin, elision, elitist, elodeas, eloined, endears, endnote, endorse, enlards, enolase, enolate, ensnare, ensnarl, entails, enteral, entitle, entrain, entrant, entreat, entries, erotise, estriol, estrone, etaerio, eternal, idolise, idolist, ileitis, indents, indians, inditer, indites, indoles, indorse, inertia, initial, inlands, inlines, innards, inosine, inosite, inroads, insaner, insider, instant, instate, instead, intends, intense, intents, interns, intoned, intoner, intones, intorts, introns, iodines, iodiser, iodites, iolites, ionised, ioniser, iratest, iridise, irisate, ironies, isolate, iterate, landers, lantern, lariats, lateens, latents, latites, latrine, leaders, leaners, leanest, leantos, learned, lenders, lenient, lenited, lenites, leotard, letters, liaised, liaison, lindens, lineate, linnets, linseed, lintier, lionets, lionise, litters, loaders, loaners, loiters, nailers, nailset, nannies, nastier, nations, natters, nattier, nearest, neatens, neatest, neonate, nestled, netters, nettled, nettles, nitrate, nitrene, nitride, nitrite, nittier, noisier, nonanes, nonarts, nondate, nondiet, nonenes, nonland, nonlate, nonlead, nonliar, nonreal, nonsale, nonsane, norites, nostril, notated, oiliest, oilseed, oleates, onliner, ordains, ordeals, ordinal, orients, orleans, otarine, radials, radians, radiant, radiate, rations, ratline, rattail, rattled, rattles, rattons, readies, realest, realise, realist, reasted, redates, redeals, redealt, redials, redline, reedits, related, relates, relents, reliant, relined, relines, reloads, reloans, renails, rennets, rennins, rentals, reoiled, reslant, resoled, restain, restate, retails, retains, retaste, retiled, retiles, retilts, retinal, retinas, retinol, retints, retitle, retoast, retotal, roadies, roasted, rodents, roisted, roseate, roselet, rosette, rosined, rotated, rotates, sainted, salient, saltate, saltern, saltier, sandier, sardine, satiate, sealant, sealion, sedater, senator, seriate, settled, settler, sidelit, siltier, sirloin, slander, slanted, slatier, slatted, slender, slitted, slitter, slotted, snailed, snarled, snorted, snotted, snotter, soldier, sortied, stained, stainer, standee, stander, starlet, starlit, started, startle, station, stealer, stented, sterane, sterile, sternal, sterned, steroid, stilted, stilter, stinted, stonier, storied, straint, striate, tailors, tainted, talents, talonid, tanners, tannest, tannins, tartans, tasered, tastier, teleost, telnets, tenants, tenders, tendons, tendril, tenners, tensile, tension, tenters, tentier, ternate, tertial, testier, tiaraed, tidiers, tidiest, tierods, tilters, tinders, tiniest, tinners, tinnier, tinters, tintier, tirades, toasted, toaster, toenail, toilers, toilets, tostada, totaled, tradein, trailed, trained, trainee, transit, treadle, treason, treated, trenail, trestle, triaene, trident, trienes, triones, tsarina