The word dreamworlds 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 dreamworlds
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Seven Letter Word Alert: (49 words)
adorers, armored, arrowed, dawdler, dawdles, deodars, deworms, dormers, drawers, drawled, drawler, drowsed, earldom, earmold, ladders, larders, loaders, madders, marrows, meadows, molders, morales, ordeals, radomes, ramrods, redraws, reloads, remolds, reswarm, rewards, rewarms, rewords, roamers, rodders, saddler, seaworm, smolder, swaddle, swarded, swarmed, swarmer, sworded, wadders, waddler, waddles, warders, warlord, warmers, wormers