IPA: /əˈlɜːrt.nəs/
KK: /əˈlɜrt.nəs/
The state of being aware and able to think clearly and quickly, especially in response to potential dangers or changes in the environment.
Her alertness during the meeting helped the team identify potential issues early.
Alertness → It is formed from "alert" (from Latin "alertus", meaning watchful or vigilant) and "-ness" (meaning the state or quality of). The word "alertness" refers to the state of being watchful or vigilant.
Think of being 'watchful' ('alert') and the '-ness' indicating a state. This helps you remember that alertness means the quality of being watchful.