"confused, dazed, stupid, tipsy," 1720s, perhaps from mossy, or from dialectal mosey (adj.) "moldy, hazy; stupefied with drink, dull, stupid."
early 15c., "like moss, downy, velvety, or hairy;" 1560s, "overgrown with moss," from moss + -y (2).
updated on March 28, 2019
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