The word correctives 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: 21
Highest Scoring Words With Friends™ Plays In The Letters correctives
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Seven Letter Word Alert: (40 words)
coercer, coerces, coesite, correct, coterie, coverer, coverts, coveter, crevice, crosier, erector, erosive, erotics, erotise, evictor, overset, oversit, reciter, recites, recover, rectors, rescore, restive, restore, retires, retries, reverts, reviser, revoice, revotes, rioters, riveter, roister, service, sievert, striver, vectors, vetoers, victors, voicers