Nihoner

さい

sai

JLPT N2 verb 連用形

is the masu-stem of さく — to tear, to rip up.

  • to cut up, to cleave, to cut open (esp. the abdomen)
  • to forcibly separate (e.g. two lovers)
Full entry for

How it’s built

さく さい

Masu-stem (). The base for ます, たい and ながら, and the way to link two actions: 書き → 書きます.

This spelling is the version with い (sound change before て/た): 書い → 書いて.

さく is a godan verb (u-verb), so it follows that pattern.

Name that form

Three more forms of . Can you tell what each one is?

Every form of

Polite さきます
Polite negative さきません
Polite past さきました
Polite past negative さきませんでした
Let us ~ さきましょう
Masu-stem さき
Want to ~ さきたい
While ~ing さきながら
Te-form さいて
Plain past さいた
Tara-conditional さいたら
Progressive さいている
Plain negative さかない
Plain past negative さかなかった
Negative te-form さかなくて
Potential さける
Ba-conditional さけば
Imperative さけ
Volitional さこう
Passive さかれる
Causative さかせる
Causative-passive さかされる

Drill every form in the Conjugation Dojo →

In real sentences

Please copy the documents.

Nihoner sentence bank

Water, too, please.

Nihoner sentence bank

Please use this elevator.

Nihoner sentence bank

Other forms and spellings

さこうさこっさこふサクさかさくさきさきゃサグざくザク
How it's used

Used in formal or literary contexts, often in news reports or written Japanese, to describe cutting or rending apart, sometimes metaphorically.

彼は古い手紙をさいた。
Kare wa furui tegami o saita.
He tore up the old letter.

刃物で紙をさいた。
Hamono de kami o saita.
I cut the paper with a blade.

⚖️ Commonly confused with 破る (yaburu), but 裂く implies a more forceful or deliberate tearing along a line.

masu-stem of さく