Longman Dictionary of Contemporary English homepage

Date: 1200-1300
Language: Old French
Origin: dangier, from Vulgar Latin dominiarium 'power to do harm', from Latin dominium 'ownership'

danger

noun
     
dan‧ger S2 W2
1 [uncountable] the possibility that someone or something will be harmed, destroyed, or killed:
Danger! No boats beyond this point.
in danger
The refugees believe that their lives are in danger.
I don't want to put you in danger.
danger of
The danger of a fire in the home increases during the holidays.
be in danger of (doing) something
The bridge was in danger of collapsing.
grave/great/real/serious etc danger
The condor was in grave danger of extinction.
danger from
The public was not aware of the danger from nuclear tests in Nevada.
out of danger
The patient is now out of danger.
Pedestrians on this road face constant danger from cars.
2 [uncountable and countable] the possibility that something bad will happen
be in danger of (doing) something
The party is in danger of being defeated in the next election.
danger that
There is a danger that museums will attempt to entertain rather than educate.
the danger of (doing) something
to guard against the danger of becoming isolated
3 [countable] something or someone that may harm or kill you:
the dangers that abound in the region
danger of
the dangers of drug use
be a danger to somebody/something
The wreck is a danger to other ships.
4

there's no danger of something

used to say that something will not happen:
There's no danger of Darren ever getting up early.
5

be on the danger list

British English to be so ill that you may die

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