The word haberdasher 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: 19
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (27 words)
abashed, abrader, abrades, abrased, abraser, adherer, adheres, barreed, bearers, bedares, beheads, brasher, debaser, harsher, headers, hearers, hearsed, herders, readers, rebased, reheard, rehears, rereads, reshare, sabered, sheared, shearer