obsr.

Noun

observer (plural observers)

1. One who makes observations, monitors or takes notice.
   • Most impartial observers agreed that Sampras had not served well.

   Synonyms:

   beholder, observator, onlooker

   Antonyms:

   observee

2. One who adheres or follows laws, guidelines, etc.
   • I shall be an observer of the local customs.
3. A person sent as a representative, to a meeting or other function to monitor but not to participate.
   • The UN sent many observers to the country's first elections.
4. A country or other entity which has limited participation rights within an organization.
   • The Vatican and Palestine have observer status at the UN.
5. A crew member on an aircraft who makes observations of enemy positions or aircraft.
   • The only crew-member to survive the crash was the Canadian observer.
6. A sentry etc. manning an observation post.
   • We waited till dusk when the observers' vision was poorest.

See all 7 meanings of observer