1not influenced by, showing, or involving personal feelings:the impersonal march of progress
(of a place or organization) large, featureless, and anonymous:large, impersonal institutions
2not existing as a person; having no personality:he gradually came to believe in an impersonal God
3 Grammar (of a verb) used only with a formal subject (in English usually it) and expressing an action not attributable to a definite subject (as in it is snowing).