subs. (vulgar).Impertinence; impudence; CHEEK (q.v.). Also, inferentially, an impudent person; e.g., Whats your IMPERENCE about?
1766. COLMAN, The Clandestine Marriage, v. in Works (1777) i. 274. I wonder at your IMPURENCE, Mr. Brush, to use me in this manner.
1821. P. EGAN, Life in London, ii. 2. She is blowing up the fellow for his IMPERANCE.
1836. DICKENS, Pickwick Papers, ch. xiv. Dont go away, Mary, said the black-eyed man. Let me alone, IMPERENCE, said the young lady.