The word rediscovers 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: 19
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (52 words)
cerises, ceroids, cervids, cervoid, codrive, covered, coverer, crosier, crossed, crosser, decrier, decries, deicers, deriver, derives, derries, desirer, desires, devices, deviser, devises, devisor, diocese, diverse, divorce, dossier, dresser, drivers, erosive, overrid, recodes, records, recover, recross, redress, redries, redrive, rescore, resider, resides, revised, reviser, revises, revoice, rivered, scorers, screeds, servers, service, soirees, voicers, voiders