The word randomise 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: 14
Highest Scoring Words With Friends™ Play In The Letters randomise
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Seven Letter Word Alert: (42 words)
admires, adonise, amidone, aneroid, animose, anodise, anomers, daemons, damners, domains, donairs, enamors, indorse, inroads, maidens, marines, medians, minders, misdoer, misdone, misread, moaners, moderns, moraine, nimrods, oarsmen, ordains, radomes, randoms, remains, remands, reminds, roadies, roadmen, romaine, rosined, sandier, sardine, seminar, sidearm, sideman, sirname