dangerous

 
Pronunciation: /ˈdeɪn(d)ʒ(ə)rəs/

adjective

  • able or likely to cause harm or injury: a dangerous animal insecticides which are dangerous to the environment
  • likely to cause problems or to have adverse consequences: it is dangerous to convict on his evidence
  • (of a drug) addictive or otherwise harmful or illegal: promoting a dangerous drug for profit

Derivatives

dangerously

adverb

dangerousness

noun

Origin:

Middle English (in the senses 'arrogant', 'fastidious', and 'difficult to please'): from Old French dangereus, from dangier (see danger)