The word unforested 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: 16
Highest Scoring Words With Friends™ Plays In The Letters unforested
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Seven Letter Word Alert: (45 words)
defrost, defuser, denotes, denture, detours, detuner, detunes, endorse, endures, ensured, estrone, fenders, fondest, fondues, forseen, fortune, founder, fronted, frosted, funders, neuters, nutseed, oftener, refound, refunds, refused, refuted, refutes, resound, retuned, retunes, rodents, rotunds, snorted, snouted, sounder, sterned, tenders, tenured, tenures, tonsure, undoers, undrest, unfreed, unreset