The word packinghouse 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: 28
Highest Scoring Words With Friends™ Play In The Letters packinghouse
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Seven Letter Word Alert: (83 words)
agnosic, agonies, agonise, anguish, apogeic, auspice, cashing, causing, ceasing, changes, chasing, cheapos, choking, coaking, cognise, coinage, copings, copsing, couping, cushion, cusping, echoing, gouache, guineas, gunship, gunshop, hacking, hangups, hankies, heaping, heinous, hoagies, hopsack, hospice, housane, housing, husking, igneous, inhouse, inscape, iphones, isopach, nickase, packing, pausing, peaking, pecking, peckish, phasing, phonics, phonies, pigeons, pinches, pingoes, poaches, pouches, pounces, pucking, punches, pushing, pushkin, sacking, saucing, scoping, shakeup, shaking, shaping, shoeing, sinkage, soaking, soaping, socking, souping, spacing, sphenic, spinach, sucking, uncages, uncapes, unchoke, unpacks, unspeak, unspoke