The word deliquescent 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: 28
Highest Scoring Words With Friends™ Play In The Letters deliquescent
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Seven Letter Word Alert: (65 words)
clients, cliqued, cliques, cutline, deceits, decenes, deciles, decline, deletes, delicts, delints, dentils, descent, destine, detinue, detunes, diluent, dilutes, ductile, duelist, dulcets, dunites, elected, eluents, ensuite, enticed, entices, equines, eustele, include, induces, inducts, inquest, lenited, lenites, leucine, leucite, license, linseed, lucites, luniest, needles, nestled, nuclide, nutseed, queened, quested, quiesce, quieted, quieten, quilted, quinces, scented, seclude, sequent, silence, sleeted, sluiced, steeled, steelie, stencil, tensile, uncited, untiled, utensil