This is the 14468th most frequent Korean word.
문이자
The Korean word "문이자" does not appear to have a standard meaning or definition. It may be a typo or non-standard term.
Here, '문이자' is used as a person's name, representing an individual in the sentence.
문이자는 새로운 업무에 적응하는 데 어려움을 겪고 있습니다.
Muniya is facing difficulties in adapting to a new job.
In this case, '문이자' is still used as a proper noun, a name, indicating an association with a lecture or scheduled event.
문이자의 다음 강좌는 다음 주 화요일에 예정되어 있습니다.
Muniya's next lecture is scheduled for next Tuesday.
Here again, '문이자' is referenced as a person, specifically someone making recommendations. The context emphasizes the individual's action.