The word stridulating 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 stridulating
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Seven Letter Word Alert: (68 words)
airguns, airings, aisling, anglist, arising, darling, darting, dialing, diarist, digital, distant, diurnal, dualist, durians, dusting, dustrag, gastrin, guitars, insular, intagli, intrust, intuits, ladings, lairing, languid, langurs, larding, lasting, lauding, ligands, listing, lusting, raiding, railing, raising, ratings, ratting, ridings, rituals, rulings, rusting, rutting, sailing, salting, sidling, silting, sitting, slating, sliding, staring, starlit, stating, straint, suiting, sundial, tailgun, tailing, tasting, tauting, tidings, tilings, tilting, titular, trading, transit, truants, tundras, urinals