Lacking personality; not being a person: an impersonal force. Showing no emotion or personality: an aloof, impersonal manner. Having no personal reference or connection: an impersonal remark. Not responsive to or expressive of human personalities: a large, impersonal corporation. Grammar Of, relating to, or being a verb that expresses the action of an unspecified subject, as in methinks,"it seems to me"; Latin pluit,"it rains"; or, with an expletive subject, it snowed. Indefinite. Used of pronouns.