The word accelerating 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: 22
Highest Scoring Words With Friends™ Play In The Letters accelerating
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Seven Letter Word Alert: (83 words)
accinge, accrete, acerate, acreage, agatine, alicant, aligner, angelic, arenite, article, calcine, calcite, carinae, carinal, carnage, cartage, carting, central, centric, certain, circlet, cleaner, clinger, cranial, crating, eccrine, elating, elegaic, elegant, elegiac, enlarge, enteral, enteric, enticer, eternal, gelatin, general, generic, genetic, genital, gentile, gentler, glacier, glancer, gleaner, gracile, granite, grantee, greaten, ingrate, integer, latrine, learing, lectern, leering, licence, lineage, lineate, neglect, ratline, reagent, realign, recital, reclang, reclean, recline, reeling, reenact, regalia, reliant, retinal, ringlet, tagline, tanager, tangier, tearing, tingler, tracing, trainee, treacle, treeing, trenail, triaene