IPA: /nɒnˈpɜːrsənl/
KK: /nɑnˈpɜrsənl/
Not related to or involving personal feelings or characteristics.
The report was written in a nonpersonal style to maintain objectivity.
Nonpersonal → It is formed from "non-" (meaning not) and "personal" (from Latin "personalis", meaning relating to a person). The word "nonpersonal" means not relating to a person or individual.
Think of 'not' ('non-') relating to a 'person' ('personal') — that's why nonpersonal means something that does not relate to an individual.