Other forms: scurviest; scurvier; scurvies
If you are a pirate who doesn't get to shore very often to shop for fresh fruits and veggies, you might suffer from scurvy, a disease caused by vitamin C deficiency.
Scurvy has some alarming symptoms: your gums become soft and tender and your teeth fall out. Scurvy has become a rarity in most parts of the world, but in regions where food is scarce and malnutrition common, it's still a problem. The unpleasant associations of the word also make it a colorful (and archaic) way to describe something low-down and miserable, as in "that was a scurvy trick you played on me, you dastardly cur!"