alert

adj

1. Attentive; awake; on guard.
2. (obsolete)brisk; nimble; moving with celerity.

   “I saw an alert young fellow that cocked his hat upon a friend of his who entered just at the same time with myself”

noun

1. An alarm.
2. A notification of higher importance than an advisory.
3. A state of readiness for potential combat.

   “an airborne alert; ground alert”

4. Synonym of bell (“bell character”).

verb

1. To give warning to.

name

1. A community in the Qikiqtaaluk Region, Nunavut, Canada; the northernmost permanently inhabited place in the world.
2. An alternative name for Alharod, a village in Varzaqan County, East Azerbaijan Province, Iran.
3. An unincorporated community in Jackson Township, Decatur County, Indiana, United States.