The word nonmechanical 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: 28
Highest Scoring Words With Friends™ Plays In The Letters nonmechanical
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Seven Letter Word Alert: (38 words)
acclaim, acholia, aeolian, alanine, anaemic, cacemia, calcine, caliche, cannoli, canonic, chalice, chancel, channel, choleic, choline, cloacae, coalman, coalmen, cocaine, cochlea, coeliac, comical, conceal, conical, enchain, laconic, laminae, lineman, machine, manacle, manhole, meconic, melanin, nominal, nonmail, nonmale, nonmeal, oceanic