Final answer:
'Impersonal' means not personal, lacking personal feelings or individuality. It is often used to describe large, formal organizations with clear hierarchies and a focus on removing personal emotions from professional situations.
Step-by-step explanation:
Impersonal means not personal, which is the correct definition based on its prefix. It refers to something that lacks personal feelings or individuality.
For example, in the context of formal organizations, large, impersonal organizations are ones that are not characterized by personal connections or emotions. This can be seen in bureaucracies, where there is a clear hierarchy of authority and impersonality is valued.
So, the correct definition of 'impersonal' is 'not personal'.