aufkocht
Aufkocht is a German verb that translates to "boils up" or "comes to a boil" in English. It is used in a literal sense to describe the process of a liquid reaching its boiling point. For example, one might say "Das Wasser kocht auf" meaning "The water is boiling up." This refers to the physical transformation of water into steam when heated to 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure.
Beyond its literal meaning, "aufkocht" can also be used figuratively. It can describe a situation or emotion