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
Hyperalert and alert are semantically related. In some cases you can use "Hyperalert" instead an adjective "Alert".
Hyperalert
Alert and hyperalert are semantically related. You can use "Alert" instead an adjective "Hyperalert".
Cite this Source
Hyperalert and Alert. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/alert/hyperalert
Alert & Hyperalert. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/alert/hyperalert>.
Hyperalert or Alert. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/alert/hyperalert.
Google Ngram Viewer shows how "alert" and "hyperalert" have occurred on timeline