The word patronesses 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: 15
Highest Scoring Words With Friends™ Plays In The Letters patronesses
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Seven Letter Word Alert: (83 words)
aptness, asepses, asperse, assents, asserts, assorts, atoners, earnest, eastern, ensears, entraps, estrone, nearest, nesters, onestep, openers, openest, operant, operate, panters, parents, parsons, passers, pasters, pastors, patrons, pentose, persona, persons, pesters, poetess, possets, postern, posters, poteens, prenote, present, presets, presses, pretans, pronate, pronest, protean, reasons, renests, reopens, repaste, repasts, repeats, repents, reposes, reposts, reseats, resents, resnaps, respans, respots, resteps, retapes, roseate, sateens, seaport, seasons, seaters, senates, senator, sensate, sensors, serapes, serpent, soapers, sparest, stenose, stepson, sterane, stereos, stoners, teasers, tensors, tossers, treason, trepans, tresses