I would not advise you to call your little brother any derogatory names because if he is younger than you, it can hurt him mentally to do so. Young people in general are very impressionable, and he might take your angry words literally. This can began to bruise his self esteem and he in turn would began to use these words on others to hurt them.
my little brother is evil and is very stupid
We don't know you or your brother, so we can't help you. This isn't the psychic network.
good
Good personality.
good
Yes Katy perry's little brother, Bradley steven perry in Good Luck Charlie.
great
outstanding
Some words that can be used to describe good work ethics are time worthy, team player, tenacious, and tireless. Diligent, firm, and loyal are also words that could be used to describe good work ethics.
4
it means good brother to a little sister
You could use excellent to describe very good :)
happy