The word defoliating 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: 19
Highest Scoring Words With Friends™ Play In The Letters defoliating
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Seven Letter Word Alert: (57 words)
aligned, angioid, anilide, dealign, dealing, defiant, dialing, dieting, digital, editing, edition, elating, elation, eliding, failing, fainted, felting, filiate, finagle, flanged, floated, foaling, foiling, folding, foliage, foliate, gelatin, genital, geoidal, glinted, gloated, godetia, ignited, infidel, infield, inflate, intagli, leading, leafing, lifting, ligated, lignite, loading, loafing, lofting, tagline, tailfin, tailing, talonid, tangelo, tangled, tangoed, tenfold, tinfoil, tingled, toenail, toiling