IPA: /ˌmɪs.dɪˈmiː.nər/
KK: /ˈmɪsdɪˌminər/
A minor crime or offense that is less serious than a felony.
He was charged with a misdemeanour for vandalizing the park.
**Misdemeanour** → It is formed from "mis-" (meaning wrong or bad) and "demeanour" (from Old French *demeanor*, meaning behavior or conduct). The word refers to a wrongful or bad behavior or conduct.
Think of 'mis-' meaning wrong and 'demeanour' referring to behavior — so a misdemeanour is a wrong behavior.