The word reevaluates 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: 17
Highest Scoring Words With Friends™ Play In The Letters reevaluates
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Seven Letter Word Alert: (28 words)
aerates, auletes, aurates, austere, austral, elaters, elevate, eluates, estrual, euaster, eustele, laveers, leavers, realest, relates, release, revalue, reveals, revulse, saluter, servlet, several, stealer, svelter, travels, valuate, valuers, vaulter