The word classificatory 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: (76 words)
accloys, accosts, acrylic, airfoil, airlift, arctics, astylar, calcify, calicos, caloric, carcass, castors, ciliary, clarify, clarity, classic, clastic, clitics, cloacas, coalify, coaltar, coarcts, coastal, colitis, costars, cotylar, craftsy, crassly, crayola, critics, crossly, crystal, cyclist, cytosis, facials, factors, factory, falsity, fascial, fascias, fascist, firstly, florist, fractal, frailty, frolics, italics, lariats, lyrists, racists, rascals, rosalic, sacrals, safaris, sailors, salsify, satiric, satisfy, scalars, scarify, scarily, sciatic, scoriac, scorias, scorify, scrotal, silicas, socials, solicit, sortals, stoical, storify, tailors, tarsals, trysail, tylosis