Alert and Slumberous

Opposite meaning words

Alert adjective - Paying close attention usually for the purpose of anticipating approaching danger or opportunity.

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Slumberous is an antonym for alert.

Nearby Words: alertness, alerted, alerting, alerter

Slumberous adjective - Desiring or needing sleep.

Usage example: parents putting their slumberous children to bed

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Alert is an antonym for slumberous.

Nearby Words: slumbering, slumber, slumbered

Cite this Source

Slumberous and Alert. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/alert/slumberous

Alert & Slumberous. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/alert/slumberous>.

Slumberous or Alert. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/alert/slumberous.

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