The word indehiscent 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: 19
Highest Scoring Words With Friends™ Play In The Letters indehiscent
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Seven Letter Word Alert: (36 words)
chested, chinned, deceits, dehisce, deistic, deities, dentine, dentins, descent, destine, diciest, dietics, dieties, dietine, ditches, eidetic, enticed, entices, ethnics, heisted, hinnies, ichnite, incense, incised, incited, incites, indents, indices, indicts, indites, intends, intense, scented, shinned, techies, thinned