Once their ruse was discovered, they were prepared to act instantly.

And you're bold enough to act instantly when the opportunity presents itself.

Now a thought came to me, and as was my bold fashion in all business, I acted on it instantly.

His trained body acted instantly to take advantage of that knowledge.

Whenever he did something, she would have to act instantly.

But if any opportunity came to change things, they would act instantly.

But the programs also introduced enormous pressure to act and react instantly.

"Every minute, we knew what was going on and were able to act instantly," he said.

There was no time to tarry; I must act instantly.

He had to act instantly to avoid a tragic happening.