The word stridulation 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: 16
Highest Scoring Words With Friends™ Play In The Letters stridulation
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Seven Letter Word Alert: (51 words)
altoist, astound, astroid, auditor, daltons, diarist, dilator, distant, distort, diurnal, donairs, dualist, durians, idolist, inroads, insular, intorts, intrust, intuits, inuloid, lauroid, liaison, nitrous, nodular, nostril, ordains, ordinal, outlast, outrant, outsail, rainout, rations, rattons, rituals, rotunda, rotunds, sirloin, starlit, station, straint, sundial, tailors, talonid, titular, tourist, transit, truants, tuition, tundras, unloads, urinals