The word potentialities 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™ Play In The Letters potentialities
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Seven Letter Word Alert: (97 words)
alpeens, alpines, altoist, aplites, apostle, attelet, elastin, elation, elision, elitist, enolase, enolate, entails, entitle, epistle, epsilon, ileitis, initial, inosite, instate, iolites, isolate, lateens, latents, latites, leanest, leantos, lenites, leptons, liaison, lineate, lionets, lionise, nailset, neatest, nepotal, nettles, oiliest, oleates, onestep, opaline, openest, opiates, palette, panties, patents, patient, patines, patties, pelites, peltate, penlite, pentail, pentose, peonies, petiole, petites, pianist, pieties, pietist, pilates, pinitol, pintail, planets, pleions, poetise, poteens, pottant, potties, pottles, salient, sealion, septate, spaniel, spelean, spittle, spotlit, station, stipite, tailpin, talents, tattles, teapots, teleost, telnets, tensile, testate, tiepins, tiniest, tinpots, tiptoes, titlist, toenail, toilets, tonette, topline, topsail