The word machiavellians 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: 29
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (40 words)
aclinal, almanac, amnesia, amnesic, anaemia, anaemic, animals, caveman, chilies, cinemas, encalms, haemins, helical, icemans, inhales, ischial, lacinia, laicise, laminae, laminal, laminas, lichens, machine, malacia, malaise, malices, manacle, mancave, maniacs, manilla, menisci, micella, miscall, seminal, shellac, silicle, valance, vanilla, vesical, villain