eyewitness

US /ˈaɪˈwɪtnɪs/

UK /ˈaɪwɪtnəs/

C2

noun

  • Someone who sees and event with their own eyes
  • A person who has seen something happen and can give a first-hand account of it.
  • Testimony given by someone who has witnessed an event.

adjective

  • Based on or consisting of direct observation.
  • Being or relating to someone who saw an event happen.

other

  • To be a direct observer of an event, especially a crime or accident.
  • To be present at an event and see it happen.