The word idolatrously 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: 18
Highest Scoring Words With Friends™ Plays In The Letters idolatrously
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Seven Letter Word Alert: (37 words)
adultly, alditol, arillus, astroid, auditor, dilator, disally, disroot, dollars, dualist, duality, dustily, dysuria, lauroid, layouts, lousily, luridly, lustily, outlays, outsail, outsoar, outsold, riotous, rituals, rollout, rustily, saltily, solidly, sootily, styloid, surlily, tailors, tardily, tidally, toluols, toroids, trysail