The word scoreboards 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 scoreboards
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Seven Letter Word Alert: (29 words)
adorers, adsorbs, arbored, barcode, boarder, borders, bracers, brassed, broader, brocade, brooder, caboose, carders, coarser, cordoba, corrode, crasser, crossed, crosser, decarbs, reboard, records, recross, resorbs, sarcode, scarers, scarred, scorers, soarers