witness

Noun

• (law) a person who testifies under oath in a court of law

• (law) a person who attests to the genuineness of a document or signature by adding their own signature

• testimony by word or deed to your religious faith

• 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
    

• someone who sees an event and reports what happened

Verb

• 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
    

• be a witness to
  • She witnessed the accident and had to testify in court
    

Related words

• Synonyms: 
  attestant , attestor , attestator , spectator , viewer , watcher , looker , witnesser , informant , find , see