The word perceptibility 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
Seven Letter Word Alert: (29 words)
betitle, bittier, brittle, clipper, clitter, cripple, epicyte, erectly, liberty, lippier, pelitic, percept, perlite, pettier, pettily, picrite, pipette, precept, prelect, pretype, pyritic, receipt, reptile, retitle, ripplet, tippier, tippler, triplet, yperite