The phrase "went through the roof" is a common idiom used to describe a significant increase in something, whether it be emotions, prices, or other measurements. Some synonyms for this phrase include skyrocketed, surged, escalated, soared, and exploded. These words are often used to emphasize the sudden and dramatic nature of the increase in question. Other similar phrases include "through the ceiling," "off the charts," "through the stratosphere," and "through the roof and into the sky." Using these phrases in your writing or conversation can add vivid imagery and emphasis to the point you are trying to make.