The word regularisations is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 20
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (507 words)
aeolian, aerator, aerials, against, agarose, agatine, agatise, agnosia, agonies, agonise, agonist, agoutis, aiglets, aigrets, aileron, airguns, airiest, airings, airless, airline, aisling, aliases, aligner, analogs, anglers, anglist, angrier, angular, antlers, antsier, areolar, areolas, argents, arguers, arising, arousal, arouser, arouses, arraign, arrange, arrests, arsenal, artisan, artless, artsier, assault, assuage, atlases, atoners, atonias, atresia, augites, aulists, aunties, aurates, aureola, aurorae, auroral, auroras, austral, earring, eartags, egoists, elastin, elating, elation, elision, elogist, eloigns, eluants, elusion, eluting, elution, elutors, engross, enlists, ensouls, entails, erasing, errants, estriol, estrous, estrual, gainers, gaiters, galenas, gaolers, garners, garnets, garrets, garters, gaseous, gassier, gastrin, gateaus, gaunter, gelatin, gelatos, genials, genital, girlier, girlies, girnels, girners, glioses, gliosis, glisten, glister, gloater, glories, glosser, gluiest, glutens, gnarler, goalies, goiters, goitres, goriest, goutier, grainer, granite, granola, granter, granule, graters, grister, gristle, groaner, grosser, grouser, grouses, grouter, grunter, gruntle, guarani, guineas, guitars, gunless, gunters, gurners, gustier, gutless, gutsier, igneous, igniter, ignites, ignitor, ignores, iguanas, inertia, ingests, ingrate, ingress, inosite, inserts, insoles, instars, insular, insults, insurer, insures, intagli, inulase, iolites, ioniser, ionises, irisate, ironage, ironers, ironies, isolate, issuing, laagers, lairing, languor, langurs, largess, largest, lariats, lasagne, lassoer, lasting, latrine, leantos, learing, leasing, legions, lesions, liaises, liaison, ligases, ligates, lignite, lingers, lingoes, lintier, lioness, lionets, lionise, listens, listing, loaners, loiters, longest, lorries, losings, lossier, lotuses, lounger, lounges, lousier, lousing, lunaria, lunates, luniest, lusters, lustier, lusting, nailers, nailset, narrate, nastier, natural, natures, neutral, nitrous, noisier, norites, nosiest, nostril, nursers, nutsier, oarless, oestrus, oiliest, oligist, onstage, oranger, oranges, orating, orients, origins, orleans, ornater, ostlers, otarine, ousters, ousting, outages, outearn, outgain, outgrin, outings, outlier, outlies, outline, outrage, outsail, outsang, ragouts, railing, rainier, rainout, raisers, raising, raisins, rangers, rangier, ranters, rasters, ratings, rations, ratline, realgar, realign, realist, realtor, rearing, reasons, regains, regalia, regions, regloss, regrant, regrout, regular, regulon, reliant, relists, reloans, renails, rentals, reroast, resails, resigns, reslant, resoils, resorts, restain, resting, restirs, results, retails, retains, retinal, retinas, retinol, retours, retrain, retrial, returns, reusing, rigours, ringers, ringlet, rinsers, rioters, rioting, risings, rituals, roaring, roaster, roilier, roiling, roister, rongeur, rosiest, rosters, rostral, rousing, routers, routine, routing, rugrats, rulings, runtier, rustier, rusting, rustler, rustles, rutiles, sagiest, saguaro, sailers, sailing, sailors, salient, salines, saltern, saltier, salting, saluter, salutes, sangria, satires, saunter, saurian, sausage, sealant, sealing, sealion, searats, searing, seastar, seating, seitans, senator, seniors, sensual, serials, serious, sestina, sierras, signals, signers, signets, signora, signors, silanes, silents, siltier, silting, singers, singles, singlet, sinters, sinuate, sirloin, slaters, slatier, slating, slinger, slogans, snarers, snarler, snorers, snorter, soarers, soaring, soiling, solutes, sonatas, sorrels, sortals, sorters, sorties, sorting, sourest, souring, sringas, stagers, stagier, stainer, stalags, stanols, starers, staring, sternal, sterols, stinger, stogies, stoners, stonier, storage, stories, storing, stourie, strains, strange, strings, sugarer, suiters, suiting, suitors, sultana, sultans, sunrise, sunstar, surgeon, surgers, surlier, surreal, sustain, sutlers, tagline, tailgun, tailing, tailors, taluses, tanager, tangelo, tangier, tangles, tarries, tarring, tarsals, teargas, tearing, teasing, tensors, terrain, tiering, tigress, tilings, tingler, tingles, tinsels, toenail, toilers, toiling, tongues, tonsils, tonsure, toruses, tossing, tourers, touring, tousles, trailer, trainer, treason, trenail, triages, triones, trouser, tsarina, tugless, turgors, turners, ugliest, unagile, unalert, unalter, uniters, unities, unlists, unrests, unseals, unseats, unsorts, unstage, uralite, urinals, urinate, urostea, utensil, utilise