This is the 4241st most frequent Korean word.
짧다
"짧다" means "short."
In this sentence, '짧다' is used to describe the length of the novel.
그 소설은 너무 짧다.
That novel is too short.
Here, '짧다' is used adverbially in '짧게' to describe the manner of answering.
그녀는 짧게 대답했다.
She answered briefly.
In this context, '짧다' is used to describe the length of the hair.