The word greengroceries 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: 22
Highest Scoring Words With Friends™ Play In The Letters greengroceries
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Seven Letter Word Alert: (41 words)
cognise, coiners, coreign, corners, cornier, cringer, cringes, cronies, crosier, encores, engorge, generic, gingers, girners, greener, greisen, grocers, ignores, ironers, necrose, negroes, recoins, regions, regorge, regreen, reigner, reneger, reneges, rerinse, rescore, riggers, ringers, scoring, scorner, serener, serging, sincere, sneerer, snogger, soggier, sorrier