The word randomises 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™ Play In The Letters randomises
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Seven Letter Word Alert: (57 words)
admires, adonise, amidone, aneroid, animose, anodise, anomers, daemons, damners, desmans, dimness, disarms, domains, donairs, dossier, enamors, indorse, inroads, inseams, isomers, madness, maidens, marines, medians, minders, misdoer, misdoes, misdone, misread, moaners, moderns, moraine, mossier, nimrods, oarsmen, ordains, radomes, randoms, ransoms, reasons, remains, remands, reminds, resands, roadies, roadmen, romaine, rosined, sanders, sandier, sardine, seminar, seniors, sermons, sidearm, sideman, sirname