The word legerdemain 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: 19
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (70 words)
aligned, aligner, amender, angered, dangler, darling, dealign, dealing, deeming, deleing, demerge, deraign, derange, emailed, emendal, emender, emerald, emerged, endgame, enlarge, enraged, geminal, general, germane, gleamed, gleaned, gleaner, gmelina, gnarled, grained, greened, gremlin, grenade, lagered, larding, leading, learing, learned, leering, limeade, lineage, mandrel, mandril, mangier, mangled, mangler, manlier, mealier, meander, melange, melding, mileage, mineral, mingled, mingler, needier, needler, reading, realign, reamend, reaming, redline, reeling, regimen, reigned, reimage, relined, remined, renamed, reneged