The word debilitating 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: 20
Highest Scoring Words With Friends™ Play In The Letters debilitating
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Seven Letter Word Alert: (43 words)
abiding, aligned, anilide, bailing, baiting, balding, bandlet, batting, battled, beading, beating, belting, betting, bitting, dealign, dealing, dialing, dieting, digital, dingbat, editing, elating, eliding, gelatin, genital, glinted, ignited, initial, intagli, leading, legband, letting, libated, ligated, lignite, tabinet, tabling, tagline, tailing, tainted, tangled, tilting, tingled