The word decollating 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™ Plays In The Letters decollating
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Seven Letter Word Alert: (68 words)
aconite, alcogel, alditol, aligned, aloetic, angelic, calling, catelog, catogen, cedilla, celling, citadel, clanged, clodlet, coaling, coalite, coating, codilla, codille, codling, cognate, coinage, collage, collate, collide, congeal, cotidal, dealign, dealing, decagon, decalin, decalog, deltaic, dialect, dolling, elating, elation, galleon, gelatin, genital, geoidal, glanced, glinted, gloated, godetia, lactone, ladling, leading, lection, ligated, loading, located, logical, noticed, oldlace, tacnode, tagline, tallied, talonid, tangelo, tangled, tangoed, telling, tillage, tingled, toenail, tollage, tolling