The word impresarios 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: 17
Highest Scoring Words With Friends™ Plays In The Letters impresarios
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Seven Letter Word Alert: (39 words)
armoire, aspirer, aspires, impairs, impasse, imposer, imposes, impress, isomers, marries, meiosis, mossier, paresis, parsers, pissier, prairie, praiser, praises, prearms, premiss, primase, primers, promise, raisers, raspers, raspier, repairs, resorps, roamers, rompers, sierras, simpers, siriema, soapers, soapier, soarers, sparers, sparser, spireas