The word bloodcurdling 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: 27
Highest Scoring Words With Friends™ Play In The Letters bloodcurdling
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Seven Letter Word Alert: (29 words)
bicolor, birddog, bolding, boudoir, budding, budling, bulldog, bulling, bullion, burling, codding, codling, colloid, cooling, cording, corndog, culling, curbing, curling, dilogun, dolling, dooring, dulcing, dulling, gluonic, obligor, rodding, rolling, rubicon