The word incongruousness 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: 25
Highest Scoring Words With Friends™ Play In The Letters incongruousness
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Seven Letter Word Alert: (92 words)
censors, cession, cognise, coiners, conning, consign, coreign, corning, cosigns, cosines, courses, cousins, cringes, cronies, crosses, cruises, cunning, curious, cursing, cussers, cussing, engross, ensigns, ensuing, erosion, goosier, goosies, grosses, grouses, gunners, gussies, igneous, ignores, ingress, insures, ionogen, ionones, isogons, issuers, neurons, noniron, nonuser, nooning, noosers, noosing, nursing, oncogen, oncosis, onerous, oogenus, orogens, osseins, osseous, recoins, regions, rennins, resigns, reunion, reusing, rousing, ruinous, running, scissor, scoring, scourge, scrooge, scrouge, seniors, sensing, sensors, serious, session, signers, signors, singers, sinners, sinuous, sinuses, snoring, sooners, sources, souring, sucrose, sunnier, sunnies, sunning, sunrise, surgeon, uncross, uncurse, unicorn, unrisen