Northanger Abbey by Jane Austen Chapter 14 Page 11

are perfectly well qualified to torment readers of the most advanced reason and mature time of life.

I use the verb 'to torment,' as I observed to be your own method, instead of 'to instruct,' supposing them to be now admitted as synonymous.”

“You think me foolish to call instruction a torment, but if you had been as much used as myself to hear poor little children first learning their letters and then learning to spell, if you had ever seen how stupid they can be for a whole morning together, and how tired my poor mother is at the end of it, as I am in the habit of seeing almost every day of my life at home, you would allow that 'to torment' and 'to instruct' might sometimes be used as synonymous words.”

“Very probably.