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Maltreatment, Mistreatment, Cruelty
noun, する verb, の adjective
If you can't wait to oppress people when you grow up, you're the kind of person who's prone to inflicting abuse on other people. You should try to correct that right away.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
Many children who were abused have extremely lowered self esteem.