The word oversewing 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: 20
Highest Scoring Words With Friends™ Play In The Letters oversewing
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Seven Letter Word Alert: (26 words)
enviers, erosive, governs, greisen, grieves, ignores, inverse, negroes, newsier, oversew, reeving, regions, regives, reviews, rewoven, serving, snowier, veering, versine, versing, version, viewers, weiners, wieners, wigeons, wingers