There are several synonyms that can be used to describe someone who is in need of a hearing device. One common phrase used is "hearing impaired," which can refer to anyone who has difficulty hearing. Another term that is often used is "hard of hearing," which implies that the individual has some level of hearing loss but is not completely deaf. Additionally, some people may use the term "deaf," but this tends to be reserved for those who are completely unable to hear. Other alternatives include "hearing challenged," "aurally challenged," or "having hearing difficulties." Regardless of the term used, it's important to be aware of the challenges that people with hearing loss may face and to be empathetic to their needs.