motive

Everyday

1. The reason why someone does something, especially something secret or wrong. tree →
2. (adjective, science) Causing movement: «motive power» drives an engine. tree →

In the lessons

In detective stories the key question: «Who had a motive?» – the detective looks for means, motive and opportunity. In ethics lessons: good deeds can have selfish motives, and the same act can be judged differently depending on the motive. In science and history: steam gave motive power to trains. Phrases: «a motive for», «hidden motive», «ulterior motive», «the motive behind».

Examples

• The detective asked who had a motive to steal the cake. tree →
• Her motive for helping was to win the prize, not to be kind. tree →
• The police still don't know the motive for the crime. tree →
• What was your motive for getting up so early? tree →
• He had an ulterior motive: he wanted to borrow my bike. tree →
• Steam engines gave motive power to the first trains. tree →
• Kind actions with good motives make the world better. tree →
• But I have sent for you to inquire what was your motive in making such a curious vow. tree →

Note

Countable: a motive, motives. Related: «motivation» (the drive to do something) and «motivate». A motive is a reason inside the person; it is not the same as an excuse. «Ulterior motive» = a hidden selfish reason.