The word unclearness 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: 18
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (59 words)
ancress, careens, carless, causers, censers, censure, cereals, clauses, cleaner, cleanse, creases, earless, encases, enseals, ensears, ensnare, ensnarl, ensures, euclase, lancers, leaners, leasers, nuances, nuclear, recanes, reclass, reclean, recluse, recusal, recuses, relaces, resales, rescale, rescans, rescues, reseals, runnels, saucers, scalene, scalers, scanner, sclerae, scleras, screens, sealers, seances, secerns, secular, secures, sensual, sucrase, unclean, unclear, unlaces, unlearn, unreels, unseals, unsnarl, ureases