When trying to express the idea of "another person", there are several synonyms that can be useful in different contexts. Some of the most commonly used alternatives include "someone else", "another individual", "another human", "a different person", "a distinct individual", or simply "another". Depending on the tone and register of the sentence, other options may include "a stranger", "a bystander", "a passerby", "an acquaintance", "a companion", or "a colleague". Choosing the right synonym can help to convey the desired meaning and nuance, whether it is in formal or informal language, academic or colloquial writing, or creative or technical contexts.