The word dekaliters 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: 16
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (67 words)
aediles, aeriest, alerted, altered, aridest, astride, darkest, dealers, dearest, dearies, delates, derails, details, dialers, diester, dieters, dilater, dilates, disrate, elaters, karites, kestrel, kilters, kirtled, kirtles, leaders, leakers, leakier, ratlike, readies, realest, realise, realist, reasked, reasted, redates, redeals, redealt, redials, reedits, related, relates, restake, retails, retakes, retiled, retiles, saltier, sedater, seriate, skelder, skelter, skirled, skirted, slatier, stalked, stalker, stealer, sterile, talkees, talkers, talkies, tasered, tealike, tirades, trailed, treadle