synonyms, antonyms, definitions, examples & translations of dangerous in English

English Online Dictionary. What means dangerous‎? What does dangerous mean?



From Middle English dangerous (difficult, severe, domineering, arrogant, fraught with danger), daungerous, from Anglo-Norman [Term?], from Old French dangereus (threatening, difficult), from dangier. Equivalent to danger +‎ -ous.

Displaced native Old English frēcne.


  • (UK) IPA(key): /ˈdeɪnʒ(ə)ɹəs/, /ˈdeɪnd͡ʒ(ə)ɹəs/
  • (US) IPA(key): /ˈdeɪnd͡ʒəɹəs/, /ˈdeɪnd͡ʒɚəs/, /ˈdeɪnd͡ʒɚs/, /ˈdeɪnʒɹəs/
  • Hyphenation: dan‧ger‧ous


dangerous (comparative more dangerous, superlative most dangerous)

  1. Full of danger.
    • “[…] it is not fair of you to bring against mankind double weapons ! Dangerous enough you are as woman alone, without bringing to your aid those gifts of mind suited to problems which men have been accustomed to arrogate to themselves.”
  2. Causing danger; ready to do harm or injury.
    • 1688, Aphra Behn, Oroonoko
      If they incline to think you dangerous / To less than gods
  3. (colloquial, dated) In a condition of danger, as from illness; threatened with death.
  4. (obsolete) Hard to suit; difficult to please.
    • My wages ben fule straite, and eke full smale; / My lorde is harde to me and daungerous.
  5. (obsolete) Reserved; not affable.
    • Of his speech daungerous

Usage notes

The standard comparative and superlative are more dangerous and most dangerous; the forms dangerouser and dangerousest or dangerest exist but are nonstandard.


(full of danger):

  • hazardous
  • perilous
  • risky
  • unsafe
  • See also Thesaurus:dangerous


  • (full of danger): safe, harmless

Derived terms

  • dangerous goods

Related terms

  • danger
  • dangerously



  • nose guard, noseguard



dangerous m (feminine singular dangerouso, masculine plural dangerous, feminine plural dangerousos)

  1. (Mistralian) Alternative form of dangeirós

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This article based on an article on Wiktionary. The list of authors can be seen in the page history there. The original work has been modified. This article is distributed under the terms of this license.