"Adding zip" is a phrase that means to give energy, excitement, or enthusiasm to something. There are several synonyms for this expression that can be used to convey a similar meaning. The term "injecting vitality" can be used to signify giving life and energy to a situation. Similarly, the phrase "infusing vibrancy" communicates a sense of invigoration and liveliness. You can also use "boosting dynamism" to communicate an increase in intensity and activity. Other expressions to communicate "adding zip" include "spicing things up" and "bringing zing." These terms can be used in various contexts to denote a surge of energy and liveliness.