The word tailpieces 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 tailpieces
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Seven Letter Word Alert: (22 words)
aplites, aplitic, aseptic, caplets, castile, ciliate, eclipse, elastic, elicits, epistle, icepail, italics, laciest, laicise, pelites, pelitic, pieties, pilates, plastic, plicate, special, spicate