Bedeutung von “sudden” im Essential American English Dictionary

sudden

adjective us /ˈsʌd·ən/

done or happening quickly and not expected:

a sudden change
His sudden death was a great shock to us all.
all of a sudden

quickly and in a way that was not expected:

All of a sudden she got up and walked out.

(Definition von “sudden” aus dem Webster's Essential Mini Dictionary © Cambridge University Press)