Keen
Keen adjective - Able to sense slight impressions or differences.
On the alert and keen are semantically related. In some cases you can use "On the alert" instead an adjective "Keen".
On the alert
Keen and on the alert are semantically related. Sometimes you can use "Keen" instead an adjective phrase "On the alert".
Mutual synonyms
Cite this Source
On the alert and Keen. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/keen/on_the_alert
Keen & On the alert. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/keen/on_the_alert>.
On the alert or Keen. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/keen/on_the_alert.
