Answer:
Disparage is to talk badly about someone
The woman was disparaging about the boys teacher, so the other students told the principle, and the woman got kicked out of the school.
the word disparage also means to be lowered in rank or reputation!
many people are disparaged, or looked down upon, because of how they look.
To use disparage as it is in the question:
His intent was to disparage his opponent.
Mary tried to disparage her co-worker because she was jealous of her promotion.