The word practicians 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 practicians
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Seven Letter Word Alert: (24 words)
actinic, anaptic, arctans, arctics, artisan, aspirin, cantrap, cantrip, capstan, captain, catnaps, catnips, critics, patinas, pianist, piarist, picnics, practic, satanic, satiric, sciatic, spartan, tarpans, tsarina