When talking about a "recipient of cash benefit," there are a few synonyms that can be used to describe this person. One common term is "beneficiary," which implies that the person is receiving some sort of financial assistance or support. Another popular synonym is "grantee," which suggests that the individual has been granted something, such as a payment or a loan. Other possible synonyms could include "recipient of financial aid," "receiving party," or simply "the person who is receiving cash benefits." Overall, there are a variety of ways to express the concept of someone who is receiving financial support or assistance in some form.