witness, witnesser, informant -- (someone who sees an event and reports what happened)
spectator, witness, viewer, watcher, looker -- (a close observer; someone who looks at something (such as an exhibition of some kind); "the spectators applauded the performance"; "television viewers"; "sky watchers discovered a new star")
witness -- (testimony by word or deed to your religious faith)
witness, attestant, attestor, attestator -- ((law) a person who attests to the genuineness of a document or signature by adding their own signature)
witness -- ((law) a person who testifies under oath in a court of law)
Overview of verb witness
The verb witness has 2 senses
witness -- (be a witness to; "She witnessed the accident and had to testify in court")
witness, find, see -- (perceive or be contemporaneous with; "We found Republicans winning the offices"; "You'll see a lot of cheating in this school"; "The 1960's saw the rebellion of the younger generation against established traditions"; "I want to see results")
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