Meaning of “dangerous” - Learner’s Dictionary

dangerous

adjective us uk /ˈdeɪndʒərəs/
Extra Examples
a dangerous substancea dangerous criminalthe demolition of dangerous buildingsElectricity can be dangerous and should always be treated with respect.He was fined £500 for dangerous driving.

A2 If someone or something is dangerous, they could harm you:

a dangerous chemical
It's dangerous to ride a motorcycle without a helmet.
dangerously adverb

B1

dangerously close to the edge

(Definition of “dangerous” from the Cambridge Learner’s Dictionary © Cambridge University Press)