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noun

alertness

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Alertness (noun) means the state of being watchful and ready to react quickly.

noun
1
The state of being watchful and ready to react quickly.
"THE human body was meant to have a midafternoon nap, according to a new consensus among sleep researchers who are studying the biological rhythms of sleep and alertness." — Daniel Goleman, Feeling Sleepy? An Urge to Nap Is Built In (1989)
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What is the meaning of alertness?
"alertness" (noun) means the state of being watchful and ready to react quickly.
What is another word for alertness?
Other words for "alertness" include watchfulness, wakefulness, alerting, vigilance.
What is the opposite of alertness?
Opposites of "alertness" include drowsiness, lethargy, sleepiness.

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