The word talkativeness 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: 23
Highest Scoring Words With Friends™ Play In The Letters talkativeness
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Seven Letter Word Alert: (92 words)
aliases, alkanes, alkenes, anklets, antlike, atlases, attains, aviates, easiest, eelskin, elastin, elative, enlists, enseals, enslave, entails, entitle, estates, estival, evilest, evitate, inkless, instate, intakes, invests, kelvins, kettles, kinases, kineses, kinless, kittens, kittles, lateens, latents, latites, leanest, leavens, lenites, lineate, listens, nailset, naivest, natives, neatest, nestles, netless, netlike, nettles, salient, salines, salivas, saltate, salvias, sateens, satiate, savants, sealant, seitans, seitens, senates, sensate, sestina, sestine, settles, silanes, silents, silkens, silvans, skittle, sleaves, snivels, stalest, statins, stative, talents, talkees, talkies, tealess, tealike, teasels, telnets, tensest, tensile, tieless, tinkles, tinsels, vainest, valiant, vastest, veinlet, vinelet, vittles