misbehavior.
Action or conduct that is inappropriate, improper, incorrect, or unexpected.
Meaning & usage
Action or conduct that is inappropriate, improper, incorrect, or unexpected.
The teacher did not tolerate misbehavior in his classroom.
Where this word comes from
Etymology tree Proto-Indo-European *mey-? Proto-Indo-European *meyth₂-der. Proto-Germanic *missaz Proto-Germanic *missa- Proto-West Germanic *missa- Old English mis- Middle English mys- English mis- Proto-Indo-European *h₁ep-der. Proto-Indo-European *h₁épsder. Proto-Indo-European *h₁épider. Proto-Indo-European *h₁pi Proto-Germanic *bider. Proto-Germanic *bi- Proto-West Germanic *bi- substratebor.? Proto-Indo-European *kap-der. Proto-Germanic *habjaną Proto-West Germanic *habbjan Proto-West Germanic *bihabbjan Old English behabban Middle English behaven Proto-Indo-European *gʰeh₁bʰ- Proto-Indo-European *-éh₁ti Proto-Indo-European *-yeti Proto-Indo-European *-éh₁yeti Proto-Indo-European *gʰh₁bʰéh₁yeti Proto-Italic *haβēō Latin habeō Old French avoirbor. Middle English havour Middle English behavoure English behavior English misbehavior From mis- + behavior.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.