1) Coldly objective 2) Having no personal preference 3) Having no personality 4) Lacking in emotion 5) Nonpersonal 6) Not personal 7) Not relating to individuals 8) Without human attributes Found on https://www.crosswordclues.com/clue/impersonal
• (n.) That which wants personality; specifically (Gram.), an impersonal verb. • (a.) Not personal; not representing a person; not having personality. Found on http://thinkexist.com/dictionary/meaning/impersonal/
Im·per'son·al adjective [ Latin impersonalis ; prefix im- not + personalis personal: confer French impersonnel . See Personal .] Not personal; not representing a person; not having personality. « An almighty but impersonal power, called Fate.» ... Found on http://www.encyclo.co.uk/webster/I/19
not personal; without reference or connection to a particular person: an impersonal remark. · having no personality; devoid of human character or traits: an impersonal deity. · lacking human emotion or warmth: an impersonal manner. · · (of a verb) having only third person singular forms and rarely if ever accompanied by an ... Found on https://www.infoplease.com/dictionary/impersonal