The word appreciably 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: 26
Highest Scoring Words With Friends™ Plays In The Letters appreciably
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Seven Letter Word Alert: (24 words)
airable, airplay, apparel, applier, bilayer, caliber, calibre, caliper, capable, capably, clapper, clayier, clipper, crappie, cripple, epicarp, papyral, parable, payable, pipelay, prelacy, reapply, repayal, replica