adjective
showing self-restraint in eating or drinking; moderate
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The abstemious scholar only indulged in the occasional glass of water during long study sessions.
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My friend is so abstemious, he won't even have a slice of cake at parties.
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I can't believe how abstemious Jake is being, he usually drinks like a fish.
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Her abstemious approach to spending money has helped her save up for a dream vacation.