一気(いっき)に

いっきに
adverb
in one go; all at once
descriptive
1. in one go; all at once; without stopping
Describes completing an action rapidly and without pause or interruption. Emphasizes speed and continuity.
水(みず)を一気(いっき)に飲(の)んだ。
I drank the water in one gulp.
宿題(しゅくだい)を一気(いっき)に片付(かたづ)けた。
I finished my homework in one go.
この小説(しょうせつ)は面白(おもしろ)くて、一気(いっき)に最後(さいご)まで読(よ)んでしまった。
This novel was so interesting that I read it all the way through without stopping.
2. suddenly; dramatically
Describes a sudden, large-scale change in a situation or condition.
気温(きおん)が一気(いっき)に下(さ)がった。
The temperature dropped suddenly.
桜(さくら)が咲(さ)いて、街(まち)が一気(いっき)に華(はな)やかになった。
The cherry blossoms bloomed and the town became vibrant all at once.
あのニュースで株価(かぶか)が一気(いっき)に上昇(じょうしょう)した。
Stock prices surged dramatically on that news.

Usage

Sense 1 focuses on doing something without interruption — drinking, reading, climbing, etc. Sense 2 describes a rapid, dramatic change in conditions like temperature, mood, or prices. Both senses share the core idea of something happening swiftly and completely.

Common collocations

  • 一気(いっき)に飲(の)む (to drink in one gulp)
  • 一気(いっき)に読(よ)む (to read in one sitting)
  • 一気(いっき)に片付(かたづ)ける (to finish in one go)
  • 一気(いっき)に加速(かそく)する (to accelerate rapidly)

Similar words

  • いっぺんに: all at once — emphasizes doing multiple things simultaneously rather than speed
  • 一挙(いっきょ)に: in one stroke — more formal, often used for decisive actions

Related Words

Compare: 一挙(いっきょ)に (in one stroke)
Compare: 一斉(いっせい) (all at once, simultaneously)
Compare: 一度(いちど)に (all at once, at one time)
Compare: 一遍(いっぺん) (once)
Compare: 勢(いきお)いよく (vigorously)
general
Added 2026.3.14 8:54 · Revised 2026.9.2 13:01
16500/16557_ikkini