The word gratifyingly 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: 25
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (33 words)
agility, airlift, anglify, angrily, failing, faintly, fairing, flaring, flaying, frailty, fraying, gaiting, gifting, girling, glaring, gratify, grating, grayfly, graying, ingraft, intagli, lairing, lifting, lignify, niftily, nitrify, rafting, railing, rifling, rifting, ringgit, tailfin, tailing