The word sparkleberry 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 sparkleberry
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Seven Letter Word Alert: (52 words)
ablepsy, balkers, barkeep, barkers, barleys, barrels, beakers, bearers, belayer, berserk, bespeak, bleaker, brayers, breaker, eyebars, kelpers, leakers, leapers, parleys, parsley, players, pleaser, prayers, prebake, presale, reakers, realers, reapers, rebakes, rebales, relapse, relayer, reparks, reparse, repeals, reperks, replays, reprays, rerapes, respeak, respray, seeably, skelper, sparely, sparker, sparkle, sparkly, speaker, spearer, splayer, sprayer, yelpers