"Relying upon" is a phrase that is often used to indicate a form of dependence, trust or belief in something or someone. However, there are several other synonyms for this phrase that can be used interchangeably in certain contexts. Some of these include depending on, counting on, trusting, banking on, leaning on, placing faith in, confiding in, and having confidence in. Each of these options provides a slightly different nuance in meaning, and careful selection is necessary to ensure the intended message is conveyed effectively. Regardless of which synonym is used, the underlying message remains the same: there is some level of necessity or reliability that is being placed on a particular source or entity.