The word conferments 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: 22
Highest Scoring Words With Friends™ Plays In The Letters conferments
:
Seven Letter Word Alert: (30 words)
cements, cenotes, centers, centres, confers, consent, cornets, emoters, encores, enforce, estrone, fencers, ferment, foments, foremen, forseen, mentors, meronts, meteors, monster, necrose, netform, nonfree, octenes, oftener, refects, remotes, rennets, scenter, tenners