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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.
Some observers criticized the meeting, noting recent changes in how they are conducted. Arkansas Online, 6 Dec. 2025 As more imagery and operational details emerge, observers will be watching for hints about whether this is an isolated prototype or the first step toward a new class of stealthy, adaptive maritime platforms. Prabhat Ranjan Mishra, Interesting Engineering, 4 Dec. 2025 At sunrise in autumn, the ecliptic — the apparent path the sun, moon and planets take across the sky over the course of a year — makes a steeper-than-average angle with the horizon for Northern Hemisphere observers. Joe Rao, Space.com, 4 Dec. 2025 Larger than its Type 075 predecessor, the ship boasts a combination of state-of-the-art launch capabilities and the capacity to carry a fleet of drones that observers believe could redefine how battles are fought at sea. Tom O'Connor, MSNBC Newsweek, 4 Dec. 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 8 Dec. 2025.

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