The word meetinghouse 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: 21
Highest Scoring Words With Friends™ Play In The Letters meetinghouse
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Seven Letter Word Alert: (48 words)
egotism, emoting, enemies, ensuite, enthuse, ethenes, genomes, gnomish, gnomist, gothism, gumshoe, gunshot, hegemon, heinous, histone, hogties, homiest, hosting, housing, humites, husting, igneous, inhouse, meeting, meshing, minuets, minutes, mistune, mitogen, moisten, mountie, mousing, mugshot, munites, mushing, nutmegs, onetime, ousting, outings, seeming, segment, shoeing, shotgun, teeming, thiones, tongues, toughen, toughie