The word bewilderment 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: 24
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (56 words)
bedewer, bedtime, beeline, beetled, bemired, bendier, bendlet, betimed, between, birdmen, bleeder, blender, blinder, brindle, deerlet, deleter, demerit, dimeter, driblet, element, emender, entered, inbreed, indwelt, lenited, merited, metered, mitered, needier, needler, nimbler, rebited, rebleed, reblend, reblent, redline, relined, remined, renewed, retiled, retimed, retwine, teenier, tendril, timbrel, trebled, tremble, tweedle, twirled, weedier, weenier, widener, wielder, wimbled, wiremen, wrenlet