Alert
Alert adjective - Paying close attention usually for the purpose of anticipating approaching danger or opportunity.
Usage example: she needed to stay alert throughout the train ride so as not to miss her stop
Observing and alert are semantically related in mindful topic. In some cases you can use "Observing" instead an adjective "Alert".
Mutual synonyms
Cite this Source
Observing and Alert. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/alert/observing
Alert & Observing. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/alert/observing>.
Observing or Alert. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/alert/observing.
Google Ngram Viewer shows how "alert" and "observing" have occurred on timeline