The word disciplinarians 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: (36 words)
acrasid, anapsid, ascarid, aspirin, canards, capsids, carinal, carpals, casspir, cranial, dalasis, inclasp, indians, inlands, innards, insipid, islands, lacinia, lipidic, niacins, pascals, placard, radials, radians, radical, raisins, rascals, sacrals, sandals, scalars, scandal, silicas, spacial, spinals, spirals, sprains