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Proverb / Kotowaza

下衆の後知恵

ReadingげすのあとじえRomajigesu no atojie

A critical term for wisdom or opinions offered by someone only after an event or failure has concluded.

Wisdom after the fact from a person of low character

Quick Answer

A critical term for wisdom or opinions offered by someone only after an event or failure has concluded.

Literal Image
Wisdom after the fact from a person of low character
Closest Equivalent
Hindsight is always twenty-twenty
How to Use It
Use this to criticize someone who tries to sound superior by pointing out what should have been done only after a failure has already occurred.

Meaning

It describes the behavior of someone who remains silent while a situation is unfolding but offers critical advice or claims they knew better once things have gone wrong. The expression serves as a rebuke of this unrefined and petty behavior of acting wise only when the outcome is safe and certain.

Literal Image

Wisdom after the fact from a person of low character

Equivalent Proverbs

01
Close✓ Reviewed

Hindsight is always twenty-twenty

The English focuses on the clarity of hindsight, while the Japanese focuses on the petty character of the speaker.

How to Use It

Use this to criticize someone who tries to sound superior by pointing out what should have been done only after a failure has already occurred.

Tone

Highly critical and insulting toward the character of the person being described; use with caution.

Examples

01

失敗が確定してから「俺ならもっとうまくやれた」と言うのは、下衆の後知恵というものだ。

Saying 'I could have done it better' after a failure is certain is just hindsight from a petty person.

Learning Notes

Key Vocabulary

Estimated LevelN1Confidence: High
Estimate, not an official JLPT list

The grammar is a simple noun phrase, but the vocabulary 'gesu' and the compound 'atojie' are advanced and idiomatic.

下衆

げす / gesu

person of low character; unrefined person

後知恵

あとじえ / atojie

wisdom after the fact; hindsight

Usage Profile

LiteraryCriticalHumbling

Usage note: This is a direct insult to someone's character and should not be used in polite or neutral company.

Misread Risk

Do not use this for constructive feedback; it is specifically meant to shame someone for their petty behavior.

Search As

下衆の後知恵げすのあとじえgesu no atojiegesunoatojiegesu-no-atojie

Kanji in This Proverb

Related Proverbs

Entry available後の祭りato no matsuriIt refers to something that is useless because the appropriate time has already passed.

Origin

The term 'Gesu' refers to a person of low or base character. The phrase describes the behavior of those who stay silent during a task but offer critical opinions or 'wisdom' after a failure has occurred, claiming they knew what would happen. It is used to warn against the petty behavior of claiming insight only after a result has been decided.

Index

Topics, Situations, and Tags

01

Topics

Learning and WisdomHuman Nature
02

Situations

Describe Human Nature
03

Tags

⚠️Warnings & Caution👥Social Dynamics⚔️Life & General Wisdom

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
2026-03-15
Updated
2026-05-08
Source 1: tomomi965.comSource 2: tomomi965.comAbout Data SourcesReport a Correction

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