The word aristocracies 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: 19
Highest Scoring Words With Friends™ Plays In The Letters aristocracies
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Seven Letter Word Alert: (85 words)
acaters, accites, accosts, actress, aerator, airiest, arctics, arrests, artsier, ascetic, ascites, atresia, carcass, carries, carrots, carters, casters, castors, ciscoes, coarcts, coarser, coaster, correct, corsair, corsets, cosiest, costars, crasser, craters, creator, cristae, critics, crosier, crosser, erotica, erotics, erratic, escorts, icteric, irisate, oecists, racecar, raciest, racists, raisers, rasters, ratrace, reactor, recasts, recoats, recross, rectors, reroast, resorts, restirs, rioters, roaster, roister, rosacea, rosiest, rosters, saccate, satires, satiric, scarcer, scarers, scarier, sciatic, scorers, scoriac, scoriae, scorias, searats, seastar, sectors, sierras, soarers, soccers, sorters, sorties, starers, stories, tarries, tracers, trocars