The word moonlighted 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™ Play In The Letters moonlighted
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Seven Letter Word Alert: (34 words)
delight, demoing, dooming, emoting, emotion, enlight, ethmoid, glinted, hindleg, hogtied, holding, hooding, hooting, hotline, lighted, lighten, looming, looting, melding, melting, mendigo, menthol, mingled, mitogen, molding, molting, moonlit, mooting, oldtime, thonged, tingled, toehold, tooling, toolmen