The word sedimenting 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 sedimenting
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Seven Letter Word Alert: (48 words)
deeming, deities, dements, dentine, denting, dentins, destine, dieties, dietine, dieting, dingies, dinting, edgiest, editing, eminent, endings, engined, engines, ignited, ignites, indents, indites, intends, intense, itemise, meeting, mending, midgets, minding, mindset, minting, misedit, misting, needing, nesting, seeding, seeming, segment, sending, smidgen, smidgin, smiting, stimied, teeming, tending, tensing, tidings, timings