The word somnambulation 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: 27
Highest Scoring Words With Friends™ Plays In The Letters somnambulation
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Seven Letter Word Alert: (59 words)
aboulia, abstain, abulias, albinos, albumin, alumina, ambiant, ammonia, amnions, amounts, animals, annuals, anoints, antlion, atomism, atonias, bailout, bastion, batsman, boatman, boltons, botulin, bunions, butanol, lambast, laminas, lotions, mailman, mansion, manuals, miasmal, moonlit, motions, moulins, nanobot, nations, niobous, nominal, nonmail, nonsuit, notions, obtains, ominous, omnibus, outmans, outsail, solanum, stamina, stannum, sultana, tabooli, tobiano, toolman, tsunami, unbaits, unbolts, unboots, unbosom, unstain