Alertness and Drowsiness

Opposite meaning words

Alertness noun - A close attentiveness to avoiding danger.

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Drowsiness is an antonym for alertness.

Nearby Words: alert, alertly, alerting

Drowsiness noun - The quality or state of desiring or needing sleep.

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Alertness is an antonym for drowsiness in sleepiness topic.

Nearby Words: drowse, drowsy, drowsily

Actually, it helps to temporarily restore mental alertness or wakefulness when experiencing fatigue or drowsiness.

Source: Cereal-Induced Superpowers

Cite this Source

Drowsiness and Alertness. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/alertness/drowsiness

Alertness & Drowsiness. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/alertness/drowsiness>.

Drowsiness or Alertness. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/alertness/drowsiness.

Google Ngram Viewer shows how "alertness" and "drowsiness" have occurred on timeline