"Being contingent on" refers to situations where one thing is dependent or relies on another thing. In order to express this concept, there are several synonyms that can be used, including conditional on, subject to, reliant on, hinging on, and hanging on. These words convey the idea that a particular outcome or situation is based on certain conditions or factors. For instance, "success is contingent on hard work" can be expressed as "success is conditional on hard work" or "hard work is a prerequisite for success". Using these synonyms can help to enrich one's vocabulary and enhance the clarity and precision of their writing.