The word decilitres 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 decilitres
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Seven Letter Word Alert: (29 words)
credits, crested, deceits, deciles, decries, deicers, deistic, deities, delicts, diciest, diester, dieters, dietics, dieties, directs, dirties, ditsier, eidetic, elicits, recited, recites, reedits, reslice, retiled, retiles, sidelit, siltier, sterile, tidiers