The word portables 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: 16
Highest Scoring Words With Friends™ Play In The Letters portables
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Seven Letter Word Alert: (25 words)
apostle, blaster, bloater, boaster, boaters, bolster, bolters, borates, lobster, palters, paroles, patrols, petrols, plaster, platers, portals, potable, probate, reblast, reboast, replots, seaport, sorbate, stabler, stapler