The word unremunerative 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: 25
Highest Scoring Words With Friends™ Plays In The Letters unremunerative
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Seven Letter Word Alert: (59 words)
arenite, arenium, averter, eminent, emirate, enamine, enterer, entrain, erratum, inerter, manurer, mariner, matinee, maturer, meatier, minaret, minuter, miterer, muriate, nervier, nitrene, nurture, raiment, reenter, reinter, remnant, renerve, retimer, retiree, retrain, reunite, revenue, reverie, riveter, runnier, runtier, runtime, tearier, teenier, terrain, terrane, trainee, trainer, triaene, trireme, unearnt, uneaten, unmeant, unnerve, unreeve, unrivet, untruer, uranium, urinate, uterine, varmint, venture, veteran, vintner