The word kidnappers 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: 22
Highest Scoring Words With Friends™ Play In The Letters kidnappers
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Seven Letter Word Alert: (37 words)
appends, apprise, aspired, dappers, darkens, despair, diapers, dippers, disrank, inkpads, kidnaps, kippers, nappers, nappies, nippers, panders, parsnip, pinesap, pinkers, praised, pranked, prepaid, sandier, sappier, sardine, skidpan, skipped, skipper, snakier, snapped, snapper, snarked, snipped, snipper, spanked, spanker, sparked