automaton
noun /ɔːˈtɒmətən/
  /ɔːˈtɑːmətən/
(plural automatons, automata 
 /ɔːˈtɒmətə/
  /ɔːˈtɑːmətə/
)- a person who behaves like a machine, without thinking or feeling anything synonym robot
- a moving mechanical device in the shape of a person                                     
- a small robot that can perform a particular range of functions
Word Originearly 17th cent.: via Latin from Greek, neuter of automatos ‘acting of itself’, from autos ‘self’.