The word interments 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: 15
Highest Scoring Words With Friends™ Play In The Letters interments
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Seven Letter Word Alert: (28 words)
eminent, emitter, entries, intense, intents, interns, itemset, metrise, metrist, minters, mittens, netters, nitrene, reemits, remines, remints, rennets, retimes, retints, smitten, tenners, tenters, tentier, termite, testier, tinners, tinters, trienes