IPA: /ˈɪmɪnənsi/
KK: /ˈɪmɪnənsi/
The state of being about to happen or occur very soon.
The imminency of the storm made everyone rush to find shelter.
Imminency is formed from "imminent" (from Latin "imminens", meaning hanging over or threatening) and the suffix "-cy" (meaning the state or condition of). The word "imminency" refers to the state of being about to happen or the condition of being imminent.
Think of something that is 'hanging over' you, suggesting it is about to happen — that's what 'imminency' means.