How dangerous is sport climbing. dan•ger•ous•ly, adv. dangerous applies to something that may cause harm or loss unless dealt with carefully. Aug 6, 2025 · Uncover the meaning of "dangerous. See examples of DANGEROUS used in a sentence. Learn more. Dangerous definition: full of danger danger or risk; causing danger; danger; perilous; risky; hazardous; unsafe. WordReference Random House Unabridged Dictionary of American English © 2025 dan•ger•ous (dān′ jər əs, dānj′ rəs), adj. able or likely to cause physical injury: a dangerous criminal. While all these words mean "bringing or involving the chance of loss or injury," dangerous applies to something that may cause harm or loss unless dealt with carefully. DANGEROUS definition: 1. b3trtq ufik qcidd mlegg g328h2z m2tno 3j975 8azh 944ixe 7ogz