Select the most appropriate meaning of the given idiom.

At the drop of a hat

Instantly

The most appropriate meaning of the idiom "at the drop of a hat" is >instantly.<

It means to do something without hesitation or delay. The idiom is thought to come from the idea that a person would be willing to do something as soon as they dropped their hat, which would be a very quick action.

The other options are not correct.

• Usually: This does not mean instantly.
• Frequently: This does not mean instantly.
• Normally: This does not mean instantly.