insult; disparagement; saying something negative about someone
I meant no detraction when I said that your book is unlikely to become a bestseller: on the contrary, I meant that it is a work of such extraordinary erudition that it can only be appreciated by a very small number of extremely learned readers.
trahere (to pull, draw) (Latin)
castigation, detraction, disapprobation
consider it as an opposite of attraction. The one who doesn't attract, we slander that. De+tract+tion: How do you SubTRACT or reduce someone's reputaTION? by slandering.