This is the 2402nd most frequent Dutch word.
verrassende
Surprising.
The word 'verrassende' describes the nature of the twist as unexpected.
De film had een verrassende wending.
The movie had a surprising twist.
Here 'verrassende' characterizes the birthday as an event filled with surprises.
Zij organiseerde een verrassende verjaardag voor haar vriend.
She organized a surprising birthday for her friend.
In this context, 'verrassende' describes the news as causing surprise or being unexpected.