The word questioner 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: 21
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (38 words)
enquire, ensuite, entries, equines, erotise, esquire, estrone, inquest, neuters, nitrous, norites, nutsier, orients, querent, queries, querist, quieten, quieter, quonset, quotees, quoters, request, requite, requote, retunes, reunite, routine, sequent, stonier, stourie, tenures, tonsure, torques, trienes, triones, uniters, unreset, uterine