"Over heartbeat" is a phrase that is often used to describe the intense feeling of excitement or nervousness that a person experiences during important moments in life. Synonyms for this phrase include "heart in overdrive," "heart racing," "pulse racing," "heart pounding," and "heart thumping." Each of these phrases conveys a sense of heightened emotion and physicality, as the heart rate increases and the body prepares for action. Whether it's on the verge of a big performance, waiting for a loved one's arrival, or facing a particularly challenging situation, these synonyms for "over heartbeat" capture the intensity of the moment with vivid language and imagery.