a. and sb. [UN-1 7, 12, 5 b.] † a. = IMPERSONAL adj., sb. 1. b. Not personal.
1530. Palsgr., 83. Of verbes some be parsonal, and some be unparsonals. Ibid., 614. This verbe is ever used as an unparsonal.
1891. Cent. Dict., Unpersonal, not personal; not intended to apply to the person addressed, as a remark.