The word stretchings 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™ Plays In The Letters stretchings
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Seven Letter Word Alert: (42 words)
cistern, cithern, cithers, cittern, cretins, cringes, etching, ethnics, hitters, incests, inchers, ingests, ingress, insects, inserts, resight, resigns, resting, retints, richest, setting, shiners, shrines, sighers, sighter, signers, signets, singers, sinters, sitters, stinger, stretch, strings, testing, theists, thirsts, tighten, tighter, tigress, tinters, tithers, trisect