The word refectories 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: 17
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (38 words)
coesite, coterie, crofter, crosier, eeriest, erecter, erector, erotics, erotise, ferrets, ferries, ferrite, fiercer, foister, forcers, foresee, forties, froster, reciter, recites, rectors, reefers, reefier, reerect, refects, refires, refrets, refries, rescore, restore, retiree, retires, retrees, retries, rioters, roister, secrete, steerer