WordReference Random House Learner's Dictionary of American English © 2017
dan•ger•ous /ˈdeɪndʒərəs/USA pronunciation   adj. 
  1. full of danger or risk:a dangerous intersection.
  2. able or likely to cause physical injury:Smoking may be dangerous to your health.
dan•ger•ous•ly, adv. 

WordReference Random House Unabridged Dictionary of American English © 2017
dan•ger•ous  (dānjər əs, dānjrəs),USA pronunciation adj. 
  1. full of danger or risk;
    causing danger;
    perilous;
    risky;
    hazardous;
    unsafe.
  2. able or likely to cause physical injury:a dangerous criminal.
danger•ous•ly, adv. 
danger•ous•ness, n. 
  • Old French dangereus threatening, difficult, equivalent. to dangier (see danger) + -eus -ous
  • Middle English da(u)ngerous domineering, fraught with danger 1175–1225


Collins Concise English Dictionary © HarperCollins Publishers::

dangerous /ˈdeɪndʒərəs/ adj
  1. causing danger; perilous

ˈdangerously adv



'dangerous' also found in these entries:
Collocations: a dangerous [animal, weapon, person, sport, neighborhood], contains dangerous [materials, chemicals, information], is dangerous to [try, use, drink, eat, keep], more...

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