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Proverb / Kotowaza

一刀両断

ReadingいっとうりょうだんRomajiittou ryoudan

To deal with a matter decisively, swiftly, and without hesitation.

cutting in two with a single stroke of a sword

Quick Answer

To deal with a matter decisively, swiftly, and without hesitation.

Literal Image
cutting in two with a single stroke of a sword
Closest Equivalent
Cutting the Gordian knot
How to Use It
Used to describe a bold, clear-cut resolution to a problem or a firm rejection of an idea.

Meaning

This idiom literally describes cutting an object completely in half with a single stroke of a sword. It is used metaphorically to describe resolving a complex problem, making a bold decision, or rejecting an idea clearly and instantly.

Literal Image

cutting in two with a single stroke of a sword

Equivalent Proverbs

01
Close✓ Reviewed

Cutting the Gordian knot

Both expressions refer to solving a complex or intractable problem with a single bold and decisive action.

How to Use It

Used to describe a bold, clear-cut resolution to a problem or a firm rejection of an idea.

Tone

Forceful and decisive; it can convey admiration for someone's problem-solving skills or sound stern when cutting down a naive proposal.

Examples

01

部長は山積していた問題を一刀両断に解決した。

The department manager decisively solved the mountain of problems.

Used here to admire a swift and effective resolution.

02

彼の甘い考えを、先生は一刀両断に切り捨てた。

The teacher firmly and decisively rejected his naive thinking.

Used here to describe a stern, unhesitating rejection.

03

複雑な状況を一刀両断で整理する。

Sorting out a complex situation with a single decisive stroke.

Describes a clear-cut approach to a complicated matter.

Learning Notes

Key Vocabulary

Estimated LevelN2Confidence: High
Estimate, not an official JLPT list

the individual kanji are basic, but learners must memorize the four-character compound (yojijukugo) and its figurative meaning.

一刀

いっとう / ittou

a single sword, one stroke

両断

りょうだん / ryoudan

cutting in two

Usage Profile

FormalEncouragingCriticalThis proverb is yojijukugo.?Yojijukugo is a Japanese four-kanji expression that works as one fixed phrase.

Usage note: Because of its strong, forceful nuance, it may sound harsh if applied to someone else's delicate personal situation.

Misread Risk

Do not use it to describe physical cutting in everyday situations (like slicing food); it is a metaphor for decisions and problem-solving.

Search As

一刀両断いっとうりょうだんittou ryoudanittouryoudanittou-ryoudan

Kanji in This Proverb

Related Proverbs

Similar快刀乱麻かいとうらんま

Origin

This expression appears in the Chinese text Zhuzi yulei (Classified Conversations of Master Zhu). The imagery of brilliantly cutting something cleanly with a single sword came to symbolize the speed and clarity of decisiveness.

Index

Topics, Situations, and Tags

01

Topics

Strategy and ActionSuccess and Failure
02

Situations

Praise EffortUrge Action
03

Tags

🎯Strategy & TacticsEfficiency🔢Numbers

Source Note

Where did this entry get its data from? The reference links are listed below. To understand how to read this section, see Data Sources.

Published
2025-12-29
Updated
2026-05-08
Source 1: tomomi965.comSource 2: tomomi965.comKanji Vocabulary: Kanji.Jepang.orgAbout Data SourcesReport a Correction

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