The word immunodeficient 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: 31
Highest Scoring Words With Friends™ Play In The Letters immunodeficient
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Seven Letter Word Alert: (63 words)
codeine, commend, comment, commune, commute, condemn, conduit, confide, confine, confute, contend, counted, deficit, defunct, demonic, demotic, demount, dentine, detinue, diction, dietine, diimine, edifice, edition, eidetic, eminent, endemic, endnote, enticed, eudemon, eudicot, fiction, idiotic, imidine, incited, intoned, inuendo, meiotic, memento, memetic, mention, mimeoed, mimetic, miocene, modicum, mounted, mountie, munited, nominee, noncute, nondiet, nonfeed, nonmute, noticed, omentum, onetime, outfind, uncited, unction, unified, unmined, unnoted, untimed