The word positioner 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: 14
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (34 words)
erosion, inosite, inspire, ioniser, ironies, isotope, noisier, norites, operons, options, orients, pitiers, pointer, poorest, portion, postern, potions, pronest, protein, protons, pterins, repoint, ropiest, snooper, sootier, spinier, sporont, stonier, stooper, tiepins, tipsier, toonies, torsion, triones