The word diversionary 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: 20
Highest Scoring Words With Friends™ Play In The Letters diversionary
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Seven Letter Word Alert: (63 words)
adonise, adorers, adorner, adviser, advisor, airdrys, airside, aneroid, anodise, arrived, arrives, avoider, dairies, darners, denarii, devisor, diaries, diviner, divines, divisor, donairs, drainer, drivein, drivers, errands, evasion, indorse, inroads, insider, invader, invades, iodines, iodiser, ionised, ioniser, ironers, ironies, ivories, noisier, ordains, ovaries, ovendry, overdry, overran, overrid, raiders, rainier, randier, ravines, readorn, roadies, rosined, sandier, sardine, savored, savorer, serovar, synovia, vendors, version, virions, viroids, voiders