Definition from macmillandictionary.com
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The weather was really bad – it rained all week.
She was feeling stressed after a bad day at work.
I’m afraid I have some bad news for you.
a bad dream
For people living alone, Christmas is often the worst time of the year.
a bad accident/mistake/case of flu
Police used tear gas, but that just made the situation worse.
It was the worst scandal of the Clinton presidency.
In the second half of the game, things went from bad to worse.
a bad diet
Too much salt can be bad for your heart.
The show got a really bad review in the Sunday paper.
Worried about bad publicity, the drug companies agreed to reduce their prices.
They are trying to develop tourism, but high crime rates are bad for business.
one of this year’s worst films
The show was so bad they took it off after two episodes.
a bad driver/teacher
I’m really bad at remembering people’s names.
a bad decision
You’ve been given bad advice.
I can come back later if this is a bad time for you.
a bad way to treat your customers
It’s bad that you have to wait so long for an appointment.
a bad back/leg/stomach
You shouldn’t try these exercises if you have a bad heart.
He’s not a bad man, just very weak.
This milk smells bad.
It will go bad if you don’t put it in the refrigerator.
My mom is taken bad this morning.