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1560s, noun use of adjective scurvy "covered with scabs, diseased, scorbutic" (early 15c.), variant of scurfy. It took on the narrower meaning of Dutch scheurbuik, French scorbut "scurvy," in reference to the disease characterized by swollen and bleeding gums, prostration, etc., perhaps from Old Norse skyrbjugr, which is perhaps literally "a swelling (bjugr) from drinking sour milk (skyr) on long sea voyages;" but OED has alternative etymology of Middle Dutch or Middle Low German origin, as "disease that lacerates the belly," from schoren "to lacerate" + Middle Low German buk, Dutch buik "belly."
scurvy scur·vy (skûr'vē)
A disease caused by deficiency of vitamin C and characterized by spongy bleeding gums, bleeding under the skin, and weakness.
Gross; repulsive (College students)