observer

noun

ob·​serv·​er əb-ˈzər-vər How to pronounce observer (audio)
: one that observes: such as
a
: a representative sent to observe but not participate officially in an activity (such as a meeting or war)
b
: an expert analyst and commentator in a particular field
political observers

Examples of observer in a Sentence

According to one observer, the event was poorly organized. The star is not visible to an observer without a telescope. According to one military observer, this change comes after years of planning. Observers say the economy is improving. The class has an observer today, so please be on your best behavior.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Nishina asked the gathering of civilian scientists and military observers. Literary Hub, 7 Aug. 2025 Bioethicists warn the risks are concerning The emphasis on charging ahead worries many observers. Rob Stein, NPR, 6 Aug. 2025 Do so as an observer, rather than judging your emotions. Mark Travers, Forbes.com, 5 Aug. 2025 What that means for observers here on Earth is that both planets should be visible together for the next few days. Eric Lagatta, USA Today, 5 Aug. 2025 See All Example Sentences for observer

Word History

Etymology

observe + -er entry 2

First Known Use

circa 1550, in the meaning defined above

Time Traveler
The first known use of observer was circa 1550

Cite this Entry

“Observer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/observer. Accessed 20 Aug. 2025.

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