The word trencherman 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: 21
Highest Scoring Words With Friends™ Plays In The Letters trencherman
:
Seven Letter Word Alert: (32 words)
amercer, canteen, caterer, chanter, charmer, charter, cheater, creamer, cremate, earthen, enchant, enhance, hearten, hectare, machete, marcher, matcher, methane, rancher, reacher, rechart, recheat, recrate, reenact, rematch, remnant, reteach, retrace, teacher, terrace, terrane, tranche