Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “dangerous”

See all translations

dangerous

adjective  /ˈdeɪn·dʒər·əs, ˈdeɪndʒ·rəs/ us  
able or likely to cause harm or death, or unpleasant problems: dangerous chemicals/bacteria Whooping cough is most dangerous for infants.
dangerously
adverb  /ˈdeɪn·dʒə·rə·sli/ us  
dangerously high winds
Translations of “dangerous”
in Korean 위험한…
in Arabic خَطير…
in Portuguese perigoso…
in Catalan perillós…
in Japanese 危ない…
in Italian pericoloso…
in Chinese (Traditional) 危險的,有威脅的, 不安全的…
in Russian опасный…
in Turkish tehlikeli…
in Chinese (Simplified) 危险的,有威胁的, 不安全的…
in Polish niebezpieczny…
(Definition of dangerous from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of dangerous?
Add Cambridge dictionaries to your browser to your website

Definitions of “dangerous” in other dictionaries

Word of the Day

work out

to exercise in order to improve the strength or appearance of your body

Word of the Day

Byronic, Orwellian and Darwinian: adjectives from names.

by Liz Walter,
April 15, 2015
Becoming an adjective is a strange kind of memorial, but it is often a sign of a person having had real influence on the world. Science is full of examples, from Hippocrates, the Greek medic born around 460 BC, who gave his name to the Hippocratic Oath still used by doctors today,

Read More 

bio-inspiration noun

April 13, 2015
the adoption of patterns and structures found in nature for the purposes of engineering, manufacturing, science, etc. The MIT researchers actually aren’t the only robotics team to turn to cheetahs for bio-inspiration.

Read More