1.persecution
He always cleaves to his principle in spite of persecution.
2.bleary
He stared at Leo with great bleary eyes.
3.purge
He recently purged the armed forces, sending hundreds of officers into retirement.
4.arrant
That's arrant nonsense.
5.gullible
I was always childlike, always gullible, always without guile, and never able to really understand the kinds of games that people seemed to find necessary.
6.reedy
The big man had a high-pitched reedy voice.
7.aggravate
What aggravates you most about this country?
8.torpor
He had slumped into a state of torpor from which nothing could rouse him.
summary:
Professor Binns told the class about the building history of Hogwards. The four founders set up the school and the four Houses were named by them. Slytherin argued with Gryffindor about whether the school could have some students from non-full-magic families. Eventually Slytherin left the school. Then a story said Slytherin had built a chamber of secrets which could only be opened by his heir. It also said there was a monster in the chamber and the heir could purge the school by the help of that monster. Binns didn't want to tell them more, although the students were very curious about it.