synonyms, antonyms, definitions, examples & translations of observer in English

English Online Dictionary. What means observer‎? What does observer mean?

From observe +‎ -er.

  • (US) IPA(key): /əbˈzɝvɚ/, /ɑb-/
  • (UK) IPA(key): /əbˈzɜːvə/, /ɒb-/

observer (plural observers)

  1. One who makes observations, monitors or takes notice
  2. One who adheres or follows laws, guidelines, etc.
  3. A person sent as a representative, to a meeting or other function to monitor but not to participate
  4. A country or other entity which has limited participation rights within an organization.
  5. (military) A crew member on an aircraft who makes observations of enemy positions or aircraft
  6. (military) A sentry etc. manning an observation post
  • beholder (sense 1 only)
  • observator (obsolete)
  • air observer
  • interobserver
  • political observer
  • observer pattern
  • “observer”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
  • “observer”, in The Century Dictionary [], New York, N.Y.: The Century Co., 1911, →OCLC.

Borrowed from Latin observō.

  • IPA(key): /ɔp.sɛʁ.ve/


  1. to observe, watch
  2. to note, notice
  3. to keep, maintain
  • “observer”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.


  1. first-person singular present passive subjunctive of observō


  1. imperative of observere

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