The word hardfisted 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: 17
Highest Scoring Words With Friends™ Play In The Letters hardfisted
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Seven Letter Word Alert: (30 words)
aridest, astride, deadish, dearths, diehard, dihedra, disrate, dithers, drafted, drifted, faddish, faddist, fairest, fathers, hafters, hardest, hastier, hatreds, ratfish, reddish, redfish, reshift, shadier, shafted, shifted, shifter, shirted, threads, tirades, trashed