This is the 9010th most frequent Korean word.
개성적인
"Unique" or "individualistic."
Here, '개성적인' highlights the uniqueness of a characteristic, emphasizing individuality in one's style of dressing.
그 사람은 개성적인 스타일로 옷을 입어요.
That person dresses in a unique style.
In this sentence, '개성적인' modifies '디자인', emphasizing the distinctiveness and originality of the designs.
개성적인 디자인이 인기를 끌고 있습니다.
Unique designs are gaining popularity.
'개성적인' is used to describe '표현' here, referring to the distinctive and personal nature of the expressions in his writing.