Snow and ice have caused chaos on the roads.

Ever since our secretary walked out, the office has been in a state of total/utter chaos.

We muddled up the name labels and chaos ensued(= resulted).

They chose a famous barrister to represent them in court.

Union officials representing the teachers met the government today.

I sent my husband to represent me at the funeral.

Women were well/poorly represented at the conference (= there were many/few present).
B2 [ L only + noun ] to be the result of something, or to be something: 

This book represents ten years of thought and research.

The new offer represented an increase of 10 percent on the previous one.

There's no point buying him expensive wines - he doesn't appreciate them.
C2 [ T ] to understand a situation and realize that it is important: 

We appreciate the need for immediate action.

[ + that ] I appreciate that it's a difficult decision for you to make.

[ + question word ] I don't think you appreciate howmuch time I spent preparing this meal.

a sexual predator

In court, he was accused of being a merciless predator who had tricked his grandmother out of her savings

The government is being widely criticized in the media for failing to limit air pollution.

We'll get nowhere if all you can do is criticize.
[ T ] to give an opinion or judgment about a book, film, etc.: 

We're a group of artists who meet to discuss ideas and criticize each other's work.

[ C ] Rumors about her are circulating at school.

I'm not feeling very alert today - not enough sleep last night!

A couple of alert readers posted comments on the website pointing out the mistake.

Parents should be alert to sudden changes in children's behaviour.