This is the 1st most frequent Afrikaans word.
die
"The" (definite article).
Here, 'die' is used as a definite article to indicate a particular noun ('son', meaning 'sun').
Die son skyn helder vandag.
The sun shines brightly today.
In this example, 'die' functions as a demonstrative pronoun modifying the noun ('rede', meaning 'reason').
Dit is die rede waarom ek laat is.
This is the reason why I am late.
In this sentence, 'die' serves as a definite article, equivalent to 'the' in English, identifying a specific noun ('boek', meaning 'book').