The word vociferously 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: 26
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (31 words)
clerisy, closure, clovers, cloyers, colours, coolers, creosol, cursive, elusory, ferulic, flyover, focuser, foolery, frolics, lousier, louvers, louvres, orioles, ourself, overfly, recoils, refocus, scorify, silvery, sluicer, surveil, velours, versify, viceroy, voicers, voyeurs