The word asymptotically 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: 29
Highest Scoring Words With Friends™ Plays In The Letters asymptotically
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Seven Letter Word Alert: (58 words)
altoist, atomics, calypso, campily, capital, capitol, cattail, cattily, coalpit, coastal, copyist, cystoma, cytomas, impacts, impalas, impasto, isotypy, lamplit, lipomas, loyalty, miscall, miscopy, misplay, moistly, myotics, opacity, optical, optimal, palmist, plastic, playact, plimsol, potamic, psalmic, pyocyst, saltcat, saltily, scallop, scatoma, soapily, somatic, spacial, spatial, spotlit, stoical, stomata, styptic, tacitly, tapioca, tastily, tipcats, tipmost, tomcats, topical, topmast, topsail, totally, typical