The word intrenchments 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: 24
Highest Scoring Words With Friends™ Play In The Letters intrenchments
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Seven Letter Word Alert: (72 words)
cements, centers, centres, chemist, chimere, cistern, cithern, cithers, cittern, cretins, emetics, eminent, emitter, enteric, enticer, entices, entries, etchers, etheric, ethnics, heretic, hermits, hitters, incense, inchers, intense, intents, interns, itemset, mercies, meshier, metrics, metrise, metrist, mincers, minters, mittens, neither, netters, nitrene, rechime, recites, reemits, remines, remints, rennets, rennins, reshine, retches, retimes, retints, richest, scenter, schemer, sincere, smitten, stretch, techies, tenners, tenters, tentier, termite, testier, tethers, therein, thermic, thinner, tinners, tinters, tithers, trienes, trisect