English Reference
noun · verb

misconduct

n. · v.
US /mɪˈskɑndəkt/ mis·con·duct UK spelling misconducted, misconducting, misconducts

  1. 01 B2 Upper Intermediate Formal Law

    n.bad or illegal behavior by a person in a position of power or a professional job.

    n.improper, illegal, or unethical conduct by a professional or official person. Often uncountable in this sense.

    Simple

    The lawyer was fired after the committee found evidence of professional misconduct.

    In context

    The investigation into judicial misconduct revealed that the judge had a significant financial interest in the outcome of the trial.

    Usage

    Often appears in the phrase 'professional misconduct' or 'gross misconduct'.

    wrongdoingmalpracticeunprofessionalism
    probityrectitude
  2. 02 B2 Upper Intermediate Formal

    n.behavior that is wrong or breaks the rules, often in a school or workplace.

    n.behavior that violates established rules or social norms, typically within an institutional framework.

    Simple

    The student was suspended for serious misconduct during the school trip.

    In context

    The company handbook clearly outlines the disciplinary procedures for employees accused of sexual misconduct in the workplace.

    misbehaviornaughtiness
  3. 03 C1 Advanced Formal

    v.to manage a business, project, or situation very poorly.

    v.to manage or conduct something in an incompetent or dishonest manner. Transitive, requiring a direct object.

    Simple

    The director was accused of having misconducted the company's financial affairs.

    In context

    The opposition party argued that the prime minister had misconducted the negotiations, leading to a diplomatic crisis.

    mismanagebotch
  4. 04 C1 Advanced FormalArchaic

    v.to behave in a way that is not acceptable or polite.

    v.to behave improperly or inappropriately. Often used reflexively (to misconduct oneself).

    Simple

    He was warned that if he misconducted himself again, he would be asked to leave.

    In context

    The diplomat was recalled to his home country after reports surfaced that he had misconducted himself at the gala.

    Usage

    Frequently used with a reflexive pronoun like 'himself' or 'themselves'.

    misbehave

The results are warning signals, not confirmed findings of misconduct, and each case still needs to be reviewed by human experts.

ScienceDaily· 16 Jul 2026

In the report, UNAMA documented instances where the de facto authorities conducted arrests and investigations of reported misconduct of security personnel – some of which were referred to Taliban military courts.

UN News· 10 Aug 2026

Etymology 1

From mis- + conduct (noun sense).

Etymology 2

From mis- + conduct (verb sense).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level C1 · Advanced
Frequency Frequent
Updated