The word unregenerated 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 unregenerated
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Seven Letter Word Alert: (57 words)
angered, denture, derange, deterge, detuner, dragnet, eagerer, enraged, entered, enterer, gaunted, gaunter, gnarred, grander, granted, grantee, granter, greaten, greater, greened, greener, greeted, greeter, grenade, grunted, grunter, guarder, gurnard, natured, negated, reagent, reargue, reenter, regnant, regrade, regrant, regrate, regreen, regreet, reneged, reneger, renegue, retrade, retread, retreed, retuned, reurged, teenage, tenured, terrane, treader, trudgen, uneager, unearnt, uneaten, unrated, untread