The word demobilising 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: 23
Highest Scoring Words With Friends™ Play In The Letters demobilising
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Seven Letter Word Alert: (50 words)
belongs, binodes, blondes, boiling, bolding, bolides, delimbs, demoing, diimine, dingies, diosmin, doilies, eliding, elision, eloigns, goblins, goldens, idolise, ignoble, imidine, indigos, indoles, iodines, ionised, legions, libidos, lingoes, lionise, lionism, melding, mendigo, midline, mingled, mingles, misdone, mobiles, molding, obliged, obliges, semilog, sibling, sidling, sigmoid, singled, sliding, sliming, smidgen, smidgin, smiling, soiling