The word unimpressed 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™ Plays In The Letters unimpressed
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Seven Letter Word Alert: (77 words)
demirep, demises, deniers, depress, desires, despise, dimness, dressup, dumpers, dumpier, empires, empress, endures, ensured, ensures, epiderm, epimers, impedes, impends, impress, insured, insures, menders, messier, minders, minuses, mispens, misused, misuser, nemesis, penises, perused, peruses, premise, premiss, preside, pressed, presume, purines, pussier, redness, reissue, remends, reminds, remined, remines, repined, repines, resends, resides, residue, respins, resumed, resumes, ripened, senders, siemens, simpers, snipers, spender, spiders, spumier, spurned, sudsier, sunrise, supered, supreme, surmise, suspend, suspire, umpired, umpires, undress, unipeds, uprisen, uprises, upsides