The word carboxylating 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: 32
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (58 words)
abating, ablator, acrobat, acyloin, airboat, alicant, anaboly, analogy, angrily, bairnly, balcony, bargain, bigotry, blaring, boating, bolting, botanic, bracing, braying, cabling, carboxy, carinal, carting, catalog, clangor, clarion, clarity, cloying, coalbag, coalbin, coaling, coaltar, coating, coaxial, coaxing, cornily, cotylar, cranial, crating, crayola, granola, laxator, libator, notably, orating, orbital, organic, ragbolt, tabling, taxably, taxicab, taxying, toxical, tracing, triaxon, trilogy, xraying, xylonic