The term 'unnamed person' can refer to a variety of people, including SOMEONE (7 letters), ANONYM (6 letters), ONE (3 letters), and soandso (7 letters). These terms are often used to refer to a person whose identity is unknown or unimportant. For example, SOMEONE might say 'I heard from SOMEONE that soandso was involved in the incident.' In this case, the speaker does not know the identity of the person they are referring to, but they still need to refer to them. Similarly, ANONYM and ONE are often used when the speaker does not want to name a specific individual.