This is the 16945th most frequent Korean word.
상스럽게
Vulgarly; crudely; coarsely.
Here, '상스럽게' means 'rudely' in the sense of exhibiting improper behavior or manners.
그는 상스럽게 행동했어.
He behaved rudely.
In this sentence, '상스럽게' refers to speaking in a vulgar or coarse manner.
그녀가 그렇게 상스럽게 말할 줄은 몰랐어.
I didn't expect her to speak so vulgarly.
Using '상스럽게' here implies that the painting was created in a coarse or unsophisticated style.