Hit the ground running is a phrase commonly used to describe the act of starting something quickly and effectively, without needing time to adjust. There are several synonyms for this phrase, such as 'jump-start', which refers to providing something with an initial boost to get it started quickly. 'Hitting the road running' is another alternative, reminding individuals that they are embarking on a journey and need to start strong. 'Hitting the deck running' and 'hitting the floor running' are synonymous with throwing oneself into a situation with immediate action. All of these phrases convey the same idea - to start powerfully and execute with energy.