The word orpiments 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™ Play In The Letters orpiments
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Seven Letter Word Alert: (29 words)
imports, imposer, mentors, meronts, minters, moisten, moister, monster, mopiest, mortise, norites, orients, permits, pimento, pointer, postern, postmen, primost, promise, pronest, protein, pterins, remints, repoint, ropiest, stomper, stonier, toprims, triones