Observer
Observer noun - Someone who sees or watches something.
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Synonyms for Observer
Radar and observer are semantically related in remote detection topic. In some cases you can use "Radar" instead a noun "Observer".
Radar
Radar noun - Measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects.
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Synonyms for Radar
Both words in one sentence
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Also, after their radar stations are hit, the RAF is left to rely on the Observer Corps to spot the bombers visually and report in.
Source: Film / Battle of Britain -
But in an attempt to keep the radar secret from Germany, the listening stations and their massive ear trumpets were maintained and kept staffed, with the RAF's success in intercepting German raids officially credited to them and to the Royal Observer Corps who manned them.
Source: Ear Trumpet
Cite this Source
Radar and Observer. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/observer/radar
Observer & Radar. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/observer/radar>.
Radar or Observer. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/observer/radar.
Google Ngram Viewer shows how "observer" and "radar" have occurred on timeline