What is another way of saying fast paced?

Here are some ways to say "fast-paced" depending on the context:

General:

* High-speed

* Rapid

* Accelerated

* Swift

* Dynamic

* Intense

* Hectic

* Whirlwind

* Breakneck

* Brisk

* Lively

* Energetic

* Bustling

* Non-stop

* Frenzied

For describing work/life:

* Demanding

* High-pressure

* Driven

* Time-sensitive

* Chaotic

For describing stories/movies/games:

* Action-packed

* Thrilling

* Suspenseful

* High-octane

For describing a person:

* Energetic

* Driven

* Ambitious

The best alternative will depend on the specific situation and the tone you want to convey.