大事な（だいじな、daijina）
- important

The Japanese word 大事な (だいじな) is an adjective that means "important," "valuable," or "precious." It signifies something that holds significant value, is crucial, or warrants careful attention. It describes something that is not to be taken lightly or overlooked. The level of importance can vary depending on the context, ranging from something that is simply significant to something that is extremely critical. When something is described as 大事な, it implies that it requires special care, consideration, or protection.

⚫︎大事な試験 Translation: Important exam ⚫︎家族は私にとって大事なものです。 Translation: Family is important to me. ⚫︎この秘密は大事なから、誰にも言わないでください。 Translation: This secret is important, so please don't tell anyone.

大事な is used to describe nouns or noun phrases. You can use it in a wide variety of situations, such as: ⚫︎ Describing things that are crucial: like a 大事な meeting or a 大事な project. ⚫︎ Talking about people or relationships that are precious: like a 大事な friend or a 大事な family member. ⚫︎ Emphasizing the value of something: like a 大事な possession or a 大事な lesson. ⚫︎ Expressing a need for care or attention. The word always comes before the noun it modifies, for example, 大事な + noun.

⚫︎The word is typically written in kanji and hiragana: 大事な (だいじな). ⚫︎大 (dai) means "great" or "big." ⚫︎事 (ji) means "thing," "matter," or "affair." ⚫︎な (na) is the adjectival ending. ⚫︎The okurigana (the suffix hiragana) is always な.

⚫︎ 重要な (じゅうような) - important, significant (more formal) ⚫︎大切な (たいせつな) - precious, important (similar meaning but can emphasize emotional value) ⚫︎肝心な (かんじんな) - crucial, essential ⚫︎大切な (たいせつな)

⚫︎ どうでもいい (dou demo ii) - It doesn't matter; unimportant. ⚫︎ 些細な (ささいな) - trivial, insignificant. ⚫︎ 重要でない (じゅうようでない) - not important (formal).

健康はとても大事なことです。 ・Translation: Health is very important. ・Explanation: This sentence emphasizes the significance of health and how it should be prioritized.

彼女は私にとって大事な友達です。 ・Translation: She is an important friend to me. ・Explanation: This sentence expresses the value of a friendship and how the person is precious to the speaker.

The word 大事な comes from the combination of the kanji 大 (dai), meaning "great," and 事 (ji), meaning "thing" or "matter," and the adjectival ending な (na). Together, they convey the meaning of something being of great importance or a great matter.