重大な（じゅうだいな、juudaina）
- serious/important

The Japanese word 重大な (じゅうだいな) is an adjective that means "serious," "important," "significant," or "grave." It describes something that is of great consequence, importance, or weight. It often implies a situation that requires careful consideration or action due to its potential impact. The word is used to highlight the severity or significance of a particular matter. The meaning of 重大な emphasizes the potential impact of an event, issue, or situation.

⚫︎ 重大な問題 Translation: A serious problem ⚫︎ 重大な決断 Translation: An important decision ⚫︎ 重大な事故 Translation: A serious accident

You can use 重大な in various contexts to emphasize the seriousness or importance of something. It is suitable for describing events, decisions, issues, or situations that have a significant impact. It can be used in both formal and informal settings, although its use leans towards a more formal tone compared to some other adjectives. When using 重大な, consider the context and the level of impact you want to convey. If something is truly significant and requires attention, 重大な is a fitting choice.

重大な is typically written with the kanji 重大 (じゅうだい) followed by the adjectival suffix な (な). It is also used with hiragana. There are no significant variations in okurigana (the suffix hiragana).

⚫︎ 深刻な (しんこくな) - serious, grave ⚫︎ 重要な (じゅうような) - important, significant ⚫︎ 深刻 (しんこく) - severe, critical ⚫︎ 大事な (だいじな) - important, precious

⚫︎ 些細な (ささいな) - trivial, insignificant ⚫︎ 軽微な (けいびな) - minor, slight ⚫︎ 重要でない (じゅうようでない) - unimportant

重大な発表があります。 ・Translation: There is an important announcement. ・Explanation: This sentence uses 重大な to emphasize that the announcement is significant and likely concerns something important.

それは重大な誤りです。 ・Translation: That is a serious mistake. ・Explanation: This sentence utilizes 重大な to highlight the severity of the mistake, suggesting significant consequences.

The word 重大な is composed of two kanji: 重 (じゅう), meaning "heavy" or "important," and 大 (だい), meaning "big" or "great." The combination of these two kanji emphasizes the gravity and significance of something. The suffix な turns it into an adjective.