piratical       
adjective  formal uk/paɪˈræt.ɪ.kəl/ us/paɪˈræt̬.ɪ.kəl/
 海盗的,海盗般的
typical of or relating to a pirate (= a person who attacks ships in order to steal from them)
  He now wore a piratical black eyepatch after an operation. 手术后,他现在像海盗那样戴了一个黑眼罩。 
 They have failed to prevent the present high level of piratical attacks on seamen. 对于现今频频发生的海盗袭击船员事件,他们无能为力。 
 See: pirate
 - More examples
 - They scanned the horizon for the skull and crossbones and other signs of piratical activity.
 - He had nearly been captured by a large and well-armed piratical vessel.
 - He's a nice man, for all his piratical looks and a missing front tooth.