The word extroversion 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: 24
Highest Scoring Words With Friends™ Plays In The Letters extroversion
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Seven Letter Word Alert: (48 words)
entries, enviers, erosion, erosive, erotise, estrone, inerter, inverse, inverts, ironers, nervier, norites, orients, overset, oversit, reinter, renters, rerents, rerinse, reroots, restive, restore, retires, retries, reverts, reviser, revotes, rioters, riveter, roister, rooster, rooters, sievert, sixteen, snorter, sootier, sterner, stonier, striven, striver, toonies, torsion, trienes, triones, versine, version, vetoers, voteens