This is the 926th most frequent Afrikaans word.
moenie
"Moenie" means "do not" or "don't."
In this sentence, 'moenie' is used to give a prohibition, meaning 'do not'.
Moenie te laat wees nie.
Do not be too late.
Here, 'moenie' is employed to express a suggestion to not do something, advising against worrying.
Moenie bekommerd wees nie.
Do not worry.
In this context, 'moenie' introduces a reported command or request to refrain from an action.