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observer - definition and synonyms

 
 
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noun [countable] observer pronunciation in American English /əbˈzɜrvər/
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singularobserver
pluralobservers
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  1. 1
    someone who sees or notices something
    Observers said soldiers opened fire on the camp’s inhabitants.
    casual observer (=someone not paying much attention): The most casual observer would have noticed his strange behavior.
  2. 2
    someone who looks at something as their job or as part of an experiment
    A trained observer can scan the images in minutes.
  3. 3
    someone whose opinions are broadcast or published because they know a lot about a particular subject
    Many political observers believe that the election is already decided.
    observer of: He was a witty and cynical observer of the social scene.
    1. a.
      someone who visits a place officially to make sure that something is done fairly and correctly
      foreign/outside/military/independent observers: Foreign observers declared the elections fair.
    2. b.
      someone who is present at an event but takes no active part
      I was invited to attend their conference as an observer.

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