The word chariness 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: 15
Highest Scoring Words With Friends™ Play In The Letters chariness
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Seven Letter Word Alert: (22 words)
ancress, arcsine, arsenic, arshine, arshins, carnies, caseins, cashers, cashier, chainer, chaises, chasers, crashes, harness, hernias, inchers, inreach, ranches, rechain, rescans, shiners, shrines