The word prosciuttos 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 prosciuttos
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Seven Letter Word Alert: (28 words)
copious, copouts, octopus, outcrop, outpost, outsits, porosis, porotic, portico, prootic, protist, prussic, purists, riotous, risotto, rustics, scorpio, scripts, soursop, sprouts, stupors, suitors, tosspot, tourist, tricots, tropics, tropist, uproots