The word decalitres 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
Seven Letter Word Alert: (99 words)
aediles, aeriest, alerted, altered, aridest, article, astride, cartels, castile, castled, catered, cerates, cereals, citadel, cladist, clarets, cleared, cradles, creased, created, creates, credits, crested, cristae, dacites, dealers, dearest, dearies, decares, deceits, deciles, declare, decrial, decries, deicers, delates, delicts, deltaic, derails, descale, details, dialect, dialers, diester, dieters, dilater, dilates, directs, disrate, drastic, eclairs, elastic, elaters, laciest, leaders, raciest, radicel, radices, radicle, reacted, readies, realest, realise, realist, reasted, recital, recited, recites, reclads, redacts, redates, redeals, redealt, redials, reedits, relaced, relaces, related, relates, rescale, reslice, retails, retiled, retiles, saltier, scalier, scarlet, sclerae, sedater, seriate, sidecar, slatier, stealer, sterile, tasered, tirades, trailed, treacle, treadle