motive
🇺🇸
/ˈməʊtɪv/
🇬🇧
/ˈməʊtɪv/
the reason why someone does something
The police are trying to find the motive for the crime.
警察は犯罪の動機を探しています。
causing movement or action
The motive force of the engine drives the wheels.
エンジンの動力が車輪を駆動します。