adverb
in one go; all at once; without stopping
Describes doing something continuously from start to finish without a break. Common with verbs of consuming, reading, working, or moving.
ビールを一気に飲み干した。
I drank the beer down in one go.
その小説を一気に読
I finished reading the novel in one sitting.
adverb
Used when a situation changes abruptly or a large number of things happen at once. Often with verbs like 変わる, 増える, or 来る.
気温が一気に下がった。
The temperature dropped suddenly.
注文が一気に増えた。
Orders increased all at once.