The word barycenters 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: 20
Highest Scoring Words With Friends™ Play In The Letters barycenters
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Seven Letter Word Alert: (64 words)
absence, banters, barrens, barters, beanery, bearers, beaters, berates, betrays, bracers, brayers, canters, carbeen, carbene, careens, careers, carters, caterer, centers, centres, cerates, cerebra, craters, creaser, creates, earners, earnest, eastern, errants, eyebars, nearest, nectars, nectary, ranters, rebater, rebates, rebrace, recanes, recants, recrate, reenact, reentry, renters, rerents, retears, retrace, scanter, scenery, scenter, screeny, serrate, sterane, sterner, strayer, styrene, tearers, ternary, terrace, terrane, tracers, tracery, trances, yearner, yestern