The phrase "imposes on" means to burden or charge someone with a responsibility or obligation. However, there are various ways to convey the same meaning using different words or phrases. For example, "place a demand on", "put pressure on", "expect from", or "enforce upon". Additionally, synonyms such as "encroach", "intrude", or "inflict" can be used to indicate a negative impact on someone's freedom or personal space. On the other hand, alternatives like "entrust", "assign", or "delegate" can suggest a positive, voluntary delegation of responsibilities. Overall, having a variety of synonyms for "imposes on" allows for more nuanced communication and expression.