not showing any feelings of sympathy, friendliness etc:
Business letters do not have to be impersonal and formal.
Sometimes she seems a very impersonal, even unkind, mother.
a place or situation that is impersonal does not make people feel that they are important:
I hate staying in hotels; they're so impersonal.
a formal and impersonal style of management
in grammar, an impersonal sentence or verb is one where the subject is represented by 'it' or 'there', as in the sentence 'It rained all day'