bad news

bad actor

An individual or entity with a prior criminal conviction, or who has been sanctioned by the court or regulator.

bad apple

A person who is not wholesome, honest, or trustworthy, especially one who has an adverse influence on others.

bad books

Disfavor.

bad business

Synonym of bad news (“irritating, troublesome or harmful thing, situation or person”).

bad company

The wrong crowd.

bad egg

Someone whose behaviour is reprehensible or irresponsible; a rogue.

bad hair day

A day when things seem to be unmanageable or go wrong.

bad iron

bad luck.