大胆な（だいたんな、daitanna）
- bold

The Japanese word 大胆な (だいたんな, daitan na) means "bold," "daring," "courageous," "audacious," or "brave." It describes someone or something that shows a lack of fear, is willing to take risks, and is often innovative or unconventional. It can also describe a style or approach that is strikingly different or eye-catching. The word functions as a na-adjective. This means it modifies nouns and its form changes depending on how it is used in a sentence.

⚫︎彼は大胆な 計画を立てた。 Translation: He made a bold plan. ⚫︎大胆な デザインが目を引く。 Translation: The daring design catches the eye. ⚫︎彼女は大胆な》 行動で問題を解決した。 Translation: She solved the problem with a courageous action.

大胆な is used to describe: ⚫︎ People: To describe someone's personality, actions, or choices. ⚫︎ Actions or Behavior: To describe an action that is risky, brave, or unconventional. ⚫︎ Designs or Styles: To describe something that is innovative, striking, or eye-catching. When using 大胆な, consider the context and the specific aspect of "boldness" you want to convey. It is more formal than some other similar words.

大胆な is typically written in kanji as 大胆な, with the reading written in hiragana as だいたんな. There are no other standard ways to write it. The okurigana (送りがな, the hiragana attached to the kanji) is always な when modifying a noun.

⚫︎ 勇敢な(ゆうかんな, yuukan na): brave, courageous. ⚫︎ 勇気のある(ゆうきのある, yuuki no aru): having courage. ⚫︎ 果敢な(かかんな, kakan na): resolute, determined, bold. ⚫︎ 強気な(つよきな, tsuyoki na): assertive, confident, bold. ⚫︎ 思い切った(おもいきった, omoikitta): daring, drastic, bold. ⚫︎ 大胆さ(だいたんさ, daitansa): boldness (noun form). 大胆な and its synonyms share overlapping meanings, but may have slightly different nuances.

⚫︎ 小心な(しょうしんな, shoushin na): timid, cautious. ⚫︎ 臆病な(おくびょうな, okubyou na): cowardly. ⚫︎ 控えめな(ひかえめな, hikaeme na): reserved, modest. ⚫︎ 慎重な(しんちょうな, shinchou na): careful, cautious.

彼女は大胆な 発言で、会議の空気を一変させた。 ・Translation: She completely changed the atmosphere of the meeting with a bold statement. ・Explanation: This sentence uses 大胆な to describe a statement that was likely not afraid to challenge the existing status quo or conventional thinking.

大胆な 投資戦略が、会社の業績を大きく向上させた。 ・Translation: A daring investment strategy greatly improved the company's performance. ・Explanation: This sentence describes an investment strategy that may have involved taking significant risks, but ultimately led to a positive outcome.

大胆 is a compound word. 大(dai) means "big" or "great," and 胆(tan) refers to "gall" or "nerve," figuratively representing courage or boldness. So, the word literally means "great gall" or "great nerve," and conceptually means being bold or courageous. The suffix な (na) is added to make it a na-adjective.