The word oversensitive 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: 22
Highest Scoring Words With Friends™ Plays In The Letters oversensitive
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Seven Letter Word Alert: (69 words)
eeriest, entrees, entries, enviers, erosive, erotise, estrone, evenest, inosite, inserts, inverse, inverts, invests, invitee, inviter, invites, invitro, ioniser, ionises, ironies, ivories, ivorist, nesters, noisier, norites, nosiest, orients, oversee, overset, oversit, renests, resents, restive, revises, revisit, revives, revotes, rosiest, seitens, seniors, sestine, sievert, sinters, soirees, sorties, stenose, stereos, stivers, stivier, stoners, stonier, stories, striven, strives, teenier, tensors, trienes, triones, veinier, veneers, verists, versine, version, vetoers, virions, visions, visitor, vitrine, voteens