in AM, use misbehavior Misbehaviour is behaviour that is not acceptable to other people.
If the toddler had been dealt with properly at first, the rest of his misbehaviour would have been avoided.
Translation English Cobuild Collins Dictionary
acting up (informal) bad behaviour, impropriety, incivility, indiscipline, insubordination, mischief, misconduct, misdeeds, misdemeanour, monkey business (informal) naughtiness, rudeness, shenanigans (informal)
English Collins Dictionary - English synonyms & Thesaurus
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