He knew that half the people inside Hogwarts thought him strange, even mad; he knew that the Daily Prophet had been making snide allusions to him for months, but there was something about seeing it written down like that in Percys writing, about knowing that Percy was advising Ron to drop him and even to tell tales about him to Umbridge, that made his situation real to him as nothing else had.
There are no more uses of "allude" in the book.
Show samples from other sources
He alluded to Susan without mentioning her name.
She didn’t mention any names, but everyone knew she was alluding to the President.