alertness (B2)

noun

Pronunciation: /əˈlɜːrtnəs/

Definition

The state of being wide awake, attentive, and quick to perceive or react.

Examples

• The pilot maintained a high level of alertness throughout the long flight.

• Coffee can temporarily boost your alertness, but it's no substitute for sleep.

• Her quick alertness to the subtle change in the patient's condition saved a life.

Synonyms of alertness

Words with a similar meaning to alertness:

• attention
• vigilance
• awareness
• attentiveness
• readiness

Antonyms of alertness

Words with the opposite meaning to alertness:

• drowsiness
• inattention

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