The word aggregations 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: 19
Highest Scoring Words With Friends™ Plays In The Letters aggregations
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Seven Letter Word Alert: (90 words)
against, agarose, agatine, agatise, agnosia, agonies, agonise, agonist, aigrets, antsier, argents, artisan, atoners, atonias, atresia, eartags, eggnogs, erasing, gaggers, gainers, gaiters, garages, garnets, gastrin, gearing, geotags, gigaton, gingers, goiters, goitres, gorging, goriest, granite, grating, ignores, ingrate, ironage, naggers, nastier, norites, onstage, oranges, orating, orients, otarine, ragging, ratings, rations, regains, regions, restain, resting, retains, retinas, saggier, sagging, sangria, searing, seating, senator, serging, signage, signora, snagger, snogger, soaring, soggier, sorting, stagger, stagier, staging, stainer, staring, stinger, stonier, storage, storing, strange, taggers, taggier, tagging, tanager, tangier, teargas, tearing, teasing, treason, triages, triones, tsarina