This is the 80th most frequent German word.
nicht
"Nicht" means "not" in English.
In this sentence, 'nicht' is used to negate the verb by indicating that the action of going to work is not occurring.
Ich gehe heute nicht zur Arbeit.
I'm not going to work today.
Here, 'nicht' is used to negate the adjective, specifying that the movie lacks the characteristic of being interesting.
Dieser Film ist nicht interessant.
This movie is not interesting.
In this sentence, 'nicht' negates the verb 'weiß' within the embedded clause, indicating the absence of knowledge about the timing.