The phrase "hinging on" is often used to describe something that is dependent on something else. It is commonly seen in discussions of plans, decisions, or outcomes that rely heavily on a particular factor or variable. While "hinging on" is a powerful and evocative phrase, it is important to remember that there are many other words and phrases that can be used to convey a similar meaning. Synonyms for "hinging on" might include "resting on", "dependent on", "relying on", "contingent upon" or "predicated on". Choosing the right synonym can help to add clarity and nuance to your writing, and can give you a greater range of ways to express your ideas.