The word pasteboards 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: 18
Highest Scoring Words With Friends™ Plays In The Letters pasteboards
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Seven Letter Word Alert: (56 words)
abasers, abaters, abators, aborted, abrades, abrased, abrases, abreast, adapter, adaptor, adopter, adsorbs, basters, bedpost, bedrops, bedropt, besorts, bespots, boasted, boaster, boaters, borates, brassed, breasts, debtors, departs, deports, despots, parades, pasters, pastors, petards, posadas, posters, probate, readapt, readopt, reboast, repasts, reposts, respots, roasted, sarapes, satraps, seaport, searats, seastar, soapers, sorbate, sorbets, spaders, sparest, sported, spreads, strobed, strobes