(to make) a silly mistake
idiot
an ill-mannered person
clod
a stupid person
stupid person
a member of a gang of armed criminals
person involved in illegal activities
a dangerous criminal
crook
a person shouting, fighting or being rude in the streets or other public places
hoodlum
a rough, ill-mannered man
boor
(GB in the 1970's) describing young people who deliberately shock society through their clothes, language, pop music etc
hoodlum
a rude and violent young man
hoodlum