The word inappositeness 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™ Plays In The Letters inappositeness
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Seven Letter Word Alert: (84 words)
anoints, appoint, apposes, aptness, asepses, asepsis, asinine, assents, easiest, epitope, inosine, inosite, insists, insteps, intense, intones, ionises, isospin, nappies, nations, neatens, neonate, noseans, nosiest, oneness, onestep, openest, opiates, osseins, pansies, panties, passion, pasties, patines, penises, pennies, pension, pentane, pentose, peonies, pepsins, peptise, peptone, petnaps, pianist, pieties, pinenes, pinesap, pinions, pinnate, pisspot, pistons, poesies, poetess, poetise, pontine, possets, poteens, potpies, saponin, sateens, seasons, seitans, seitens, senates, sensate, session, sestina, sestine, siennas, siestas, snippet, sonnets, spinets, spinnet, spinons, spinose, stenose, steppes, stepson, tenpins, tension, tiepins, topspin