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vagary - an unexpected and inexplicable change in something (in a situation or a person's behavior, etc.); the vagaries of the weather; his wealth fluctuates with the vagaries of the stock market; he has dealt with human vagaries for many years.
Gluttony, derived from the Latin gluttire meaning to gulp down or swallow, means over-indulgence and over-consumption of food, drink, or wealth items to the point of extravagance or waste.