This is the 478th most frequent Danish word.
slet
"Bad," "delete," or "completely," depending on context.
Here, 'sletter' is a verb and means 'delete'.
Jeg sletter filen, hvis den ikke er nødvendig.
I delete the file if it's not necessary.
Here, 'slet' intensifies the negation of 'not interested'.
Han er slet ikke interesseret i at deltage.
He is not at all interested in participating.
Here, 'slet' is part of the phrase 'slet og ret,' meaning 'simply' or 'plainly'.