Alert and Insensible

Opposite meaning words

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

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Insensible is an antonym for alert.

Nearby Words: alertness, alerted, alerting, alerter

Insensible adjective - Having lost consciousness.

Usage example: if a choking person is insensible, you should lay them down on their back before performing the Heimlich maneuver

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Alert is an antonym for insensible.

Cite this Source

Insensible and Alert. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/alert/insensible

Alert & Insensible. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/alert/insensible>.

Insensible or Alert. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/alert/insensible.

Google Ngram Viewer shows how "alert" and "insensible" have occurred on timeline