from the same root as the German "ken", related to the English words "cunning" and "could", as in to know (how to do)
► uses
Uses:
with lesson-books to be conned; emblems of a past that had sunk down and well-nigh vanished under the earth
Marcel Proust. In Search of Lost Time [volume 1]
---
wait, and you shall hear if he conned his A B C to please me; and if it were worth while being civil to the brute.
Emily Brontë. Wuthering Heights (1847)
---
it is true that when he used a Greek or Latin phrase he always gave the English with scrupulous care, but he would probably have done this in any case. A learned provincial clergyman is accustomed to think of his acquaintances as of "lords, knyghtes, and other noble and worthi men, that conne Latyn but lytille."
George Eliot. Middlemarch.
---
I sat there, sturdily conning my books, until dinner-time (we were out of school for good at three); and went down, hopeful of becoming a passable sort of boy yet.
Charles Dickens. David Copperfield (1850)
---
It was the hour of study; they were engaged in conning over their to-morrow’s task, and the hum I had heard was the combined result of their whispered repetitions.