LEARNit Dictionary

alertness

noun
1
the ability to think quickly and to notice things
هوشیاری, تیزبینی, چابکی ذهن, زیرکی, دقت
2
the fact of being aware of something, especially a problem or danger
هوشیاری, آگاهی, گوش به زنگ بودن
With a real threat of ambush, the crews remained at a high state of alertness.