suddenness
Definitions
The quality or state of occurring or appearing unexpectedly and abruptly.
The characteristic of being rapid or precipitate in action or occurrence.
Examples
The suddenness of the storm caught everyone on the beach by surprise.
I was startled by the suddenness with which he stood up and left the room.
Synonyms
abruptness unexpectedness precipitancy impetuosity rapidity instancy
Antonyms
gradualness slowness deliberation leisureliness predictability tardiness