How to Say "Grammar" in Korean

문법

munbeop[munp͈ʌ̹p̚]

The English word 'grammar' is translated into Korean as 문법 (munbeop).

문법 is a noun used to refer to the rules for speaking and writing a language.

Meaning: rules for speaking and writing a language (noun)

How does it change in a sentence?

To create the adverb 'grammatically', you can add the suffix –적으로 to the noun to form 문법적으로.

munbeop

Korean grammar includes a complex system of honorifics that changes verb endings based on the listener's social status. This means 문법 dictates not just the meaning of a sentence but the social hierarchy of the speakers.
Korean grammar allows for the omission of the subject or object if the context makes it clear. This means a 'grammatically' correct sentence in Korean may be completely missing a subject that would be required in English.
Because the 'law' (法) element is baked into the word 문법, a person who makes many grammatical errors might be jokingly described as someone who 'breaks the law' of the language.

독일어 문법에 어려움을 겪는 중이야.
I'm having a hard time with German grammar.
This sentence shows how to express having difficulty with a specific language's grammar using 문법.
Tatoeba #8421424 by Eunhee, translation #1894029 by CK
문법을 더 공부해야 해요.
You must study grammar more.
This sentence is a way to say that one must study grammar more using 문법.
Tatoeba #13177549 by atitarev, translation #69721 by CK
이 언어의 문법은 매우 어렵다.
This language's grammar is very difficult.
This sentence describes a language where the grammar is very difficult using 문법.
Tatoeba #13177552 by atitarev, translation #13062994 by tatemame97
문법은 한국어 학습에서 중요한 부분입니다.
Grammar is an important part of learning Korean.
일본어 어법을 배우는 데는 시간이 필요합니다.
It takes time to learn Japanese grammar.
6 more sentences on Tatoeba

Seoyeon and Jihun are discussing their Korean language studies at a cafe.

서연 Seo-yeon

한국어 문법이 너무 복잡해.
Hangugeo munbeobi neomu bokjaphae.
Korean grammar is too complicated.
지훈 Ji-hun

그래도 문법을 잘 알면 좋아.
Geuraedo munbeobeul jal almyeon joa.
Still, it's good to know the grammar well.
서연 Seo-yeon

지훈 씨는 문법을 잘해요?
Jihun ssineun munbeobeul jalhaeyo?
Jihun, are you good at grammar?
지훈 Ji-hun

아니요, 저도 아직 어려워요.
Aniyo, jeodo ajik eoryeowoyo.
No, it is still difficult for me too.

Sources

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