dangerous

Meanings

1. 1
   adj

   causing fear or anxiety by threatening great harm

   a dangerous operation

2. 2
   adj

   Full of danger.

   Railway crossings without gates are highly dangerous.

3. 3
   adj

   Causing danger; ready to do harm or injury.

   If they incline to think you dangerous, / They have their knaviſh Arts to make you ſo.

4. 4
   adj

   involving or causing danger or risk

5. 5
   adj

   In a condition of danger, as from illness; threatened with death.

Etymology

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.