"Open the throttle" is a phrase commonly used to describe the action of increasing speed or power. However, there are several synonyms that can be used to convey the same meaning. These include "accelerate", "floor it", "push the pedal to the metal", "give it gas", "put the foot down", and "increase the RPMs". These synonyms are commonly used in different contexts, such as driving, racing, or operating heavy machinery. Regardless of the situation, they all convey the urgency and intensity required to increase speed or power. So next time you need to express the need for speed, consider using one of these synonyms instead of "open the throttle".