This is the 680th most frequent Afrikaans word.
ongelooflik
Incredible.
In this sentence, 'ongelooflik' is used to intensify the adjective 'mooi' (beautiful), suggesting an extreme or remarkable level.
Die uitsig vanaf die berg was ongelooflik mooi.
The view from the mountain was incredibly beautiful.
In this context, 'ongelooflik' modifies 'gelukkig' (happy), providing emphasis on the intensity of the feeling.
Ek voel ongelooflik gelukkig vandag.
I feel incredibly happy today.
Here, 'ongelooflik' describes the noun 'storie' (story) to imply that it is extraordinary or scarcely believable.