The word archdeaconry 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: 24
Highest Scoring Words With Friends™ Play In The Letters archdeaconry
:
Seven Letter Word Alert: (20 words)
accoyed, adorner, anarchy, archean, archery, arrayed, chanced, chancre, charade, charred, coached, daycare, handcar, hoarder, orchard, racecar, ranched, rancher, readorn, roached