The word misapplication 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 misapplication
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Seven Letter Word Alert: (85 words)
actions, alicant, anaptic, animals, animist, aplitic, appoint, atomics, atonias, atonics, campion, capital, capitol, capstan, captain, caption, cations, catnaps, catnips, coalman, coalpit, coastal, coatman, colitis, iconism, iconist, impacts, impalas, impasto, implant, inclasp, initial, italics, lacinia, laminas, laptops, liaison, lionism, lipomas, maniacs, masonic, militia, miscoin, misplan, monilia, napalms, nicosia, oilcans, optical, optimal, palmist, patinas, pianist, pinitol, pintail, plasmin, plasmon, plastic, platipi, politic, poplins, postman, potamic, psalmic, psionic, saltpan, satanic, scatoma, silicon, solicit, somatic, somitic, sopaipa, spacial, spatial, stamina, stoical, tailpin, tampons, tapioca, tilapia, timpani, topical, topsail, topspin