|Origin:||sodain, from Latin subitaneus, from subitus 'sudden', from subire 'to come up'|
sud‧den S2 W3
happening, coming, or done quickly or when you do not expect it:
a sudden change in the weather
Life is cruel, she thought, with a sudden rush of anger.
Her death was sudden.
All of a sudden the lights went out.
—suddenness noun [uncountable]