The word categorizes 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™ Play In The Letters
Seven Letter Word Alert: (41 words)
acerose, aeriest, aigrets, azotise, cagiest, cargoes, cerates, coaster, coesite, corsage, coterie, coziest, crazies, creates, cristae, czarist, erotica, erotics, erotise, erotize, etaerio, gaiters, gastric, gearset, goatees, goiters, goitres, goriest, raciest, recites, recoats, restage, roseate, scoriae, seagoer, seriate, stagier, storage, triages, zeroise, zestier