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Definition dangerous in British English

dangerous adjective

adjective
/ˈdeɪndʒərəs/
1

likely to harm or kill someone, or to damage or destroy something

Example

a dangerous dog

Example

a dangerous stretch of road

Example

Air pollution has reached dangerous levels in some cities.

Example

an exciting but highly dangerous sport

Example

Children are taught to avoid potentially dangerous situations.

Example

It is not yet known whether these chemicals are dangerous to humans.

Example

It's dangerous to walk around here on your own at night.

Synonyms and related words
2

likely to have a bad effect or to cause a problem

Example

Mr Ashley is playing a dangerous game, pretending to support both parties.

Example

It is extremely dangerous for you to get involved in this.

Example

The sacking of Mr Nolan could set a dangerous precedent.

Synonyms and related words
Definition dangerous in British English