危ない橋を渡る

abunai hashi o wataru
verb phraseIntermediate take a risky gambleidiom
What It Really Means
To engage in risky behavior despite knowing the potential severe consequences, often involving moral, legal, or social danger.
Literal Meaning
To cross a dangerous bridge
Literal Breakdown
危ないdangerous+bridge+を渡るto cross
Mental Image
A person carefully walking across a rickety, unstable bridge over a deep ravine, where one misstep could mean falling to certain doom. The bridge represents the risky path they've chosen to take.
When to Use
A manager embezzles company funds to cover personal debts, knowing they could be fired or prosecuted if discovered. Colleagues might say '彼は会社のお金を横領して、危ない橋を渡っている' (He's embezzling company money and taking a risky gamble).
Cultural Note
This idiom reflects Japan's cultural emphasis on social harmony and the severe consequences of disrupting it. The bridge metaphor may also relate to historical travel dangers in mountainous regions where bridges were literal life-or-death matters.
formal

To take a risky action despite knowing the potential consequences, often involving moral or legal danger.

政治家が汚職疑惑で危ない橋を渡っている。

The politician is walking a tightrope with corruption allegations.

彼女は友達の恋人と付き合って、危ない橋を渡っている。

She's dating her friend's partner, playing with fire.

💡

Commonly used when someone is engaging in risky behavior that could lead to serious trouble if discovered.

Related Phrases

命がけphrase
risking one's life
火中の栗を拾うproverb
to grab chestnuts from the fire
背水の陣metaphor
burning one's boats

💡Pro Tip

When to use this idiom

Use this when someone is knowingly taking a risk that could have serious consequences if discovered. Common in business, politics, or personal relationships where the stakes are high.

Gold Rule

Don't confuse with literal meaning

This idiom always refers to metaphorical danger, not physical crossing of bridges. Even if someone is literally crossing a dangerous bridge, the idiom would only apply if the context is about taking a risky action.

📖Word Origin

The phrase combines 危ない (abunai, dangerous) + 橋 (hashi, bridge) + 渡る (wataru, to cross). The bridge metaphor suggests walking a precarious path where one wrong step could lead to disaster. The idiom likely originates from the literal danger of crossing unstable bridges in historical contexts.

📝Usage Notes

This idiom is often used in contexts involving moral dilemmas, legal risks, or personal relationships where the consequences of getting caught would be severe. It implies a calculated risk where the person is aware of the danger but proceeds anyway.

Word Breakdown

危ない
dangerous
adjective
+
bridge
noun
+
object marker
particle
+
渡る
to cross
verb
和英辞典