n.
  - an unusual, exciting, and daring experience. 
▸excitement arising from such experiences:
 in search of adventure.
 - archaic a commercial speculation.
 
v.
 dated engage in an adventure.
 
  Derivative
  
    - adventurer n.
  - adventuresome adj.
  - adventuress n.
 
   
  Etymology
  ME: from OFr. aventure (n.), aventurer (v.), based on L. adventurus ‘about to happen’, from advenire ‘arrive’.