undervaluement

Barbadoes were not content with exercising the greatest hardness and barbarity upon the Negroes, in making the most of their labour, without any regard to the calls of humanity, but that they had suffered such a slight and undervaluement to prevail in their minds towards these their oppressed fellow creatures, as to discourage any step being taken, whereby they might be made acquainted with the christian religion.

Some Historical Account of Guinea, Its Situation, Produce, and the General Disposition of Its Inhabitants An Inquiry into the Rise and Progress of the Slave Trade, Its Nature and Lamentable Effects Anthony Benezet 1748