Definition of unintentionally:
5. A man who wounds another unintentionally shall be tried according to the law respecting blows given in an affray, and the punishment rendered more or less severe, according to the degree of injury sustained.- "Travels in China, Containing Descriptions, Observations, and Comparisons, Made and Collected in the Course of a Short Residence at the Imperial Palace of Yuen-Min-Yuen, and on a Subsequent Journey through the Country from Pekin to Canton", John Barrow.
- "A Rogue by Compulsion", Victor Bridges.
- "The Descent of Man and Selection in Relation to Sex, Vol. I (1st edition)", Charles Darwin.