watchful, vigilant, wide-awake, alert mean being on the lookout especially for danger or opportunity. watchful is the least explicit term. vigilant suggests intense, unremitting, wary watchfulness. wide-awake applies to watchfulness for opportunities and …

Synonyms for ALERTNESS: carefulness, caution, care, prudence, attentiveness, cautiousness, circumspection, wariness; Antonyms of ALERTNESS: carelessness, recklessness, heedlessness, brashness, suddenness, abruptness, rashness, hastiness

ALERTNESS definition: 1. the state of being ready to see, understand, and act in a particular situation: 2. the state of…. Learn more.

Alertness is a state of active attention characterized by high sensory awareness. Someone who is alert is vigilant and promptly meets danger or emergency, or is quick to perceive and act. Alertness is a psychological and physiological state.

Definition of alertness noun from the Oxford Advanced Learner's Dictionary. the ability to think quickly and to notice things. Sleep deprivation could affect mental alertness. the fact of being aware of something, especially a problem or danger. With a real threat of ambush, the crews remained at a high state of alertness.

Alertness definition: The quality of being alert or on the alert; briskness; nimbleness; activity.

To notify of approaching danger or action; warn: a flashing red light that alerted motorists to trouble ahead. Watchful and prepared for danger, emergency, or opportunity: bird watchers on the alert for a rare species.

DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘alertness'. Views expressed in the examples do not represent the opinion …

Alertness is the state of being vigilant, observant, fully aware, and ready to respond swiftly to changes in one's environment or situations. This cognitive condition often involves heightened sensory perception, quick thinking, and prompt responsiveness.

2018年4月19日 · n. the state of being awake, aware, attentive, and prepared to act or react. Neurologically, alertness corresponds with high-frequency, low-amplitude brain waves resulting from stimulation of the reticular formation. See also arousal. —alert adj.