The word centilitres 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™ Plays In The Letters centilitres
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Seven Letter Word Alert: (59 words)
centers, centres, cistern, citrine, cittern, clients, clitter, cretins, elicits, elitist, enteric, enticer, entices, entitle, entries, inciter, incites, irenics, lectern, lenites, letters, license, lintier, litters, netters, nettles, nitrite, nittier, recites, recline, relents, relines, reslice, retiles, retilts, retints, retitle, scenter, sericin, settler, silence, siltier, sincere, slitter, stencil, sterile, stilter, telnets, tensile, tenters, tentier, testier, tilters, tiniest, tinters, tintier, trestle, trienes, trisect