The phrase "crack something open" refers to the act of breaking open something that is usually sealed or closed. There are a variety of synonyms for this phrase, including "split open," "burst open," "pry open," "break apart," "tear open," and "unseal." Each of these synonyms conveys a sense of force and effort needed to open something that is otherwise inaccessible. The choice of synonym may depend on the context in which it is used, with some terms implying a greater level of aggression or force than others. Regardless of the synonym used, cracking something open can be a satisfying and rewarding experience.