The word masquerading 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™ Play In The Letters masquerading
:
Seven Letter Word Alert: (83 words)
admires, agendas, airguns, amnesia, amusing, arenium, asunder, damager, damages, damners, dangers, deraign, desugar, diagram, digrams, durians, enigmas, erasing, gainers, ganders, gardens, gaudier, gaudies, grained, grandma, guarani, guineas, iguanas, imagers, insured, maidens, managed, manager, manages, mangers, mangier, manured, manures, marauds, margins, marinas, marines, marques, marquis, medians, megarad, minders, mirages, misread, mungers, qindars, radians, radiums, reading, reaming, regains, remains, remands, reminds, reusing, samurai, sandier, sangria, sardine, saurian, seamaid, seaming, searing, seminar, sidearm, sideman, sirname, smidgen, smudger, squared, squidge, squired, sugared, surname, unaimed, unaired, unarmed, uraemia