Translation guide
A device in an engine that ignites fuel, or metaphorically, a person or thing that energizes or initiates something.
The physical component in an internal combustion engine that produces a spark to ignite the fuel-air mixture.
A person who inspires, motivates, or drives a group or project forward.
An event, idea, or thing that triggers significant change or activity.
The most common and direct translation, used in automotive contexts.
スパークプラグを交換する必要があります。
You need to replace the spark plugs.
A slightly more technical term, literally 'ignition plug'. Used in manuals and by mechanics.
点火プラグの状態を確認してください。
Please check the condition of the spark plugs.
Literally 'detonator', used metaphorically for a person who sparks action or change. Common in business and sports contexts.
彼がチームの起爆剤になった。
He became the spark plug of the team.
Literally 'fire-starter role', used for someone who initiates a movement or trend. Slightly more dramatic.
彼女はプロジェクトの火付け役だった。
She was the spark plug for the project.
Means 'pulling role', used for someone who leads and drives a team forward. Less explosive nuance, more about steady leadership.
彼はチームの牽引役として活躍した。
He played the role of spark plug for the team.
Same as for a person, but applied to an event or thing. Very versatile.
その新製品が市場の起爆剤となった。
The new product became the spark plug for the market.
Literally 'priming water', used for something that triggers a larger reaction or process. Often used in economic or social contexts.
その政策が景気回復の呼び水となった。
That policy became the spark plug for economic recovery.
A general term for 'trigger' or 'opportunity'. Less forceful than 'spark plug', but very common.
その出会いが彼の人生の転機のきっかけとなった。
That encounter became the spark plug for a turning point in his life.