Definition of alertness in English:

alertness

noun

  • The quality of being alert.

    ‘a lack of mental alertness’
    ‘nothing could escape the steel trap of my alertness’
    • ‘Fire has caused £30,000 damage to a woollen waste mill, and it could have been worse but for the alertness of a teenage girl.’
    • ‘Clydebank looked as though they had done enough for another valuable point, but they reckoned without the alertness of Alan Neil.’
    • ‘Travelers to such destinations practice extra alertness, precaution and prudence.’
    • ‘Anything related to Taiwan's survival should be heeded with special alertness.’
    • ‘Nonetheless, he said, police would maintain a high degree of alertness.’
    vigilance, awareness, watchfulness, attentiveness, attention, circumspection, wariness, chariness, heedfulness, canniness, discretion, prudence
    quick-wittedness, quick thinking, quickness of mind, sharpness, quickness, keenness, perceptiveness, responsiveness, agility, acuteness, acuity, shrewdness, astuteness, intelligence, insight, presence of mind
    View synonyms

Pronunciation

alertness

/əˈlərtnəs//əˈlərtnəs/