한마디 (hanmadi) means “a few words”

More examples

그에게 한마디 하기가 어려웠다.keu e ge han ma di ha gi ga eo ryeo wot tta

It was difficult to say a few words to him.

One compact statement that captures the central message of a discussion.

말mal: Spoken words used to share thoughts or information in conversation.
의견uigyeon: A person's considered view or judgment about an issue.

짧은 말로 전체를 요약하거나 결론을 나타내는 표현jjal beun mal lo cheon che reul yo ya ka geo na kyeol lo neul na ta nae neun pyo hyeon

The word is built from native Korean elements for one and a segment or unit, linking a single utterance with a concise summary.

The word can introduce a speaker's key takeaway, so recognizing it helps identify the conclusion in Korean discussions.