The word proverbially 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: 26
Highest Scoring Words With Friends™ Play In The Letters proverbially
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Seven Letter Word Alert: (40 words)
alveoli, bilayer, bipolar, bolivar, braille, bravely, bravery, broiler, laborer, layover, liberal, library, livable, lobelia, lovable, lovably, loverly, loyaler, olivary, overall, overlap, overlay, overpay, parboil, parrell, payroll, pillory, pliable, pliably, plovery, polarly, prebill, preboil, prevail, proverb, pyrrole, rivalry, rollbar, vaporer, virally