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observer

noun

ob·​serv·​er əb-ˈzər-vər How to pronounce observer (audio)
Synonyms of observernext
: 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.
Trump has accused Maduro of being an illegitimate president after an election that most independent observers believe was stolen. Richard Hall, Time, 29 Nov. 2025 Quick victories that many observers expected from the big guys – Russia and the Myanmar military – quickly evaporated as the little guys – Ukraine and the Myanmar rebels – used drones to level the playing field. Brad Lendon, CNN Money, 27 Nov. 2025 The recent declines in mortgage rates, which have started in late summer ahead of the Federal Reserve’s first cut since December 2024, are largely linked to observers’ expectations of what the central bank will do. Giulia Carbonaro, MSNBC Newsweek, 27 Nov. 2025 After the Soviet Union tested its first atomic weapon in 1949, some US observers considered that perhaps the Soviets were deterrable, but only if the United States maintained massive atomic superiority. Big Think, 27 Nov. 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 7 Dec. 2025.

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