to drink up
to consume the entire contents of a glass, bottle, or other container that holds a beverage

飲み干す (のみほす), 一気に飲む (いっきにのむ)

[動詞]
to gobble up
to eat something quickly and greedily, often with little regard to manners or etiquette

がっつく, むしゃむしゃ食べる

[動詞]

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