Observing
Observing adjective - Quick to notice; showing quick and keen perception.
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Synonyms for Observing
Surveil and observing are semantically related. In some cases you can use "Surveil" instead a verb "Observing".
Surveil
Mutual synonyms
Related pairs
Both words in one sentence
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While the agents observing Bourne and the journalist are perfectly prepared beforehand to surveil the journalist's own phone, this new phone comes completely out of the blue from their perspective, and thus it takes them a while until they are able to track it down and to eavesdrop.
Source: Film / The Bourne Ultimatum
Cite this Source
Surveil and Observing. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/observing/surveil
Observing & Surveil. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/observing/surveil>.
Surveil or Observing. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/observing/surveil.
Google Ngram Viewer shows how "observing" and "surveil" have occurred on timeline