The word densimeters 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 densimeters
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Seven Letter Word Alert: (80 words)
dements, demerit, demesne, demises, demists, deniers, densest, deserts, desires, dessert, destine, diester, dieters, dimeter, dimness, dissent, eeriest, emender, emersed, emerses, enemies, entered, entrees, entries, esteems, inserts, meeters, menders, merited, messier, metered, metrise, minders, mindset, minters, misters, mitered, needers, needier, nemesis, nesters, redeems, redness, reedits, reemits, reested, remeets, remends, reminds, remined, remines, remints, renests, reseeds, resends, resents, resides, restems, retimed, retimes, seeders, seedier, seitens, senders, sestine, siemens, sinters, smiters, sneered, snidest, steered, sterned, strides, teemers, teenier, tenders, tinders, tressed, tridems, trienes