虐待 (nüè dài): 학대하다.

The neighbors heard the child crying late at night every day and suspected the parents were mistreating him, so they called the police.

The law clearly stipulates that mistreating the elderly or children will be severely punished.

That experience of being abused left her with deep psychological trauma, and years later she still needed treatment.

Animal protection organizations call on everyone not to mistreat pets and to give them enough food and care.

Because he had long mistreated his wife, he was eventually sentenced to fixed-term imprisonment by the court.