a bad (or uncollectible) debt.
a bad chess player.
a bad cut.
a bad earthquake.
a bad headache.
a bad heart.
a bad investment.
a bad little boy.
a bad recital.
a bad report card.
a bad storm.
a bad telephone connection.
a defective appliance.
a forged twenty dollar bill.
a refrigerator full of spoilt food.
an unsound limb.
anything that promises to pay too much can't help being risky.
bad air.
bad luck.
bad meat.
bad teeth.
clothes in bad shape.
felt regretful over his vanished youth.
had a big (or bad) shock.
has a bad back.
he felt bad about breaking the vase.
he wants a bicycle so bad he can taste it.
he was feeling tough after a restless night.
high risk investments.
his sloppy appearance made a bad impression.
I wanted it badly enough to work hard for it.
in a big rage.
it hurts bad.
it was a bad light for reading.
led a very bad life.
like a bad penny....
my throat feels bad.
regretful over mistakes she had made.
she felt bad all over.
smoking is bad for you.
so-called bad grammar.
speculative business enterprises.
take the bad with the good.
the buildings were badly shaken.
the cables had sagged badly.
the injury hurt badly.
the movie was a bad choice.
the news was very bad.
the pay is bad.
the reviews were bad.
they were badly in need of help.
unsound teeth.
we need water bad.