This is the 17th most frequent Korean word.
것이다
"(It) is" or "(It) will be" - indicates reasoning, intention, or future certainty.
In this sentence, '것이다' is used to describe a future condition or outcome, indicating possibility and certainty.
이 그림은 정말 아름다운 예술 작품이 될 것이다.
This painting will truly become a beautiful work of art.
Here, '것이다' expresses a logical conclusion or an opinion regarding the situation.
그는 자신의 실수를 인정하지 않는 것이 이상하다.
It is peculiar that he does not admit his own mistakes.
In this example, '것이다' is part of a structure to nominalize the verb, thus framing the action as a subject or object.