This is the 1390th most frequent Korean word.
아주
"아주" means "very" or "extremely" in English.
Here, '아주' is used to emphasize the adjective '달아요', meaning 'sweet', indicating a strong degree of sweetness.
이 케이크는 아주 달아요.
This cake is very sweet.
In this sentence, '아주' intensifies the adjective '오래된', meaning 'old', suggesting that the book's age is significant.
아주 오래된 책을 발견했어요.
I found a very old book.
'아주' here enhances the adverb '잘', meaning 'well', to convey that the skill of singing is exceptionally good.