The word dichotomising 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: 25
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (49 words)
chiding, chiming, codings, comings, condoms, costing, diction, diosmin, dishing, dominos, dooming, dotcoms, gnomish, gnomist, gnostic, goodish, gothics, gothism, hidings, hominid, hooding, hooting, hosting, hotdogs, iconism, iconist, idiotic, indicts, indigos, insight, isodont, itching, miscoin, misting, monoids, mooting, moschid, motions, osmotic, shindig, shooing, sigmoid, smidgin, smiting, sodomic, somitic, sooting, tidings, timings