Synonyms of 'malpractice'
misconductDictionary, abuse, negligence
serious allegations of malpractice
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He pleaded guilty to wilful dereliction of duty.
Misbehaviour is behaviour that is not acceptable to other people.
This child's misbehaviour could have been avoided.
Misconduct is bad or unacceptable behaviour, especially by a professional person.
He was dismissed from his job for gross misconduct.
Thesaurus for malpractice from the Collins English Thesaurus
If you accuse someone of malpractice , you are accusing them of breaking the law or the rules of their profession in order to gain some advantage for themselves.