The word spoonerisms 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™ Play In The Letters spoonerisms
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Seven Letter Word Alert: (33 words)
erosion, imposer, imposes, impress, ionomer, isomers, mispens, mossier, noisome, noosers, oosperm, operons, osmosis, osseins, persons, poisons, poroses, porosis, premiss, prisons, promise, respins, seniors, sensors, sermons, session, simpers, snipers, snooper, somonis, sooners, spinose, sponsor