operator

Noun

• a speculator who trades aggressively on stock or commodity markets

• a shrewd or unscrupulous person who knows how to circumvent difficulties

• someone who owns or operates a business
  • who is the operator of this franchise?
    

• an agent that operates some apparatus or machine
  • the operator of the switchboard
    

• (mathematics) a symbol or function representing a mathematical operation

Related words

• Synonyms: 
  hustler , wheeler dealer , manipulator