badly behaved

Translations
плохо себя ведет
The child was badly behaved during the ceremony.
Ребенок плохо себя вел во время церемонии.
Definitions
Exhibiting inappropriate or disruptive conduct, often in a way that is socially unacceptable or disrespectful.
Words
badly

adverb
плохо
behaved

adjective
воспитанный