形容人行為或想法極度大膽、無畏，甚至到了魯莽或無禮的程度。
大膽無畏
EN: showing a willingness to take surprisingly bold risks
翻譯: 表現出願意承擔驚人大膽風險的意願
魯莽放肆
EN: showing a lack of respect or an impudent lack of fear
翻譯: 表現出缺乏尊重或無禮的、不知畏懼的態度
創新敢為
EN: original and daring in a way that disregards convention
翻譯: 以一種無視傳統的方式展現原創性與膽識
小提醒：此詞雖有正面（勇敢創新）與負面（魯莽無禮）兩種意涵，使用時需根據上下文判斷其褒貶。
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Audacious" from YouTube Videos
How Do You Convince Someone to Join Your Startup? - Dalton Caldwell
Y Combinator
“the reason you should work on things that you really care about is the following: it would appear that it's equally hard to succeed in a startup that you don't care about and one that you do, and it's almost equally hard to succeed in a startup that's a very ambitious, audacious idea, as it is to do something super incremental.”
1. showing a willingness to take bold risks; daring or fearless
表現出願意承擔大膽風險的；魯莽或無畏的
The climber made an audacious attempt to scale the sheer cliff face without ropes.
那位登山者進行了一次大膽的嘗試，在沒有繩索的情況下攀登陡峭的懸崖面。
Her audacious plan to start a business with no capital seemed impossible to most.
她打算在沒有資金的情況下創業的大膽計劃，對大多數人來說似乎是不可能的。
2. showing a lack of respect; impudent or brazen
表現出缺乏尊重的；厚顏無恥的
He had the audacious nerve to ask for a raise after being late every day this week.
他這週每天都遲到，竟然還有臉要求加薪。
The reporter's audacious question left the politician momentarily speechless.
記者無禮的問題讓那位政治家一時語塞。
3. original and shocking in a way that is intended to be noticed
以引人注目的方式表現出原創性和震撼性的
The designer's audacious use of neon colors and unconventional fabrics defined the collection.
設計師對霓虹色彩和非傳統面料的大膽運用，定義了整個系列。
The film's audacious ending divided critics and audiences alike.
這部電影大膽的結局讓評論家和觀眾產生了分歧。
| Pattern | Meaning | Example |
|---|---|---|
| be + audacious | 是膽大妄為的；是無畏的 | His plan was audacious and brilliant. (他的計畫大膽而卓越。) |
| audacious + noun | 大膽的…；魯莽的… | It was an audacious attempt to climb the mountain in winter. (那是一次在冬天攀登這座山的大膽嘗試。) |
| audacious enough to + V | 膽敢到足以…；有足夠的膽量去… | She was audacious enough to challenge the CEO's decision. (她膽敢到足以挑戰執行長的決定。) |
| It is audacious of someone to + V | 某人做…真是大膽 | It was audacious of them to launch the product without any market research. (他們在沒有任何市場調查的情況下推出產品，真是大膽。) |
EN:It was audacious of them to cross the border in broad daylight.
翻譯:他們竟敢在光天化日之下越境，真是大膽。
一般來說，描述具體行為用「audacious doing」，評價行為者或意圖則用「audacious to do」。
audacious vs bold
「audacious」強調的是不顧後果、無視風險的魯莽大膽，常帶有負面或震驚的意味；「bold」則較中性，指有勇氣、自信或果斷，不一定有魯莽的含義。
audacious vs daring
「audacious」側重於行為的魯莽、無禮或令人震驚；「daring」則更強調在危險或困難面前的勇氣和冒險精神，較常帶有正面或欽佩的意味。
audacious vs cheeky
「audacious」形容的是重大、魯莽且可能造成嚴重後果的大膽行為；「cheeky」則指較輕微、無禮但常帶有幽默或淘氣意味的放肆，多用於非正式場合。
用於引述或轉述他人大膽的言行時，常帶有驚訝或評論的語氣。 EN: "And then he just walked into the meeting and said, 'We should scrap the whole project.' Can you believe how audacious that was?" 翻譯: 「然後他就這樣走進會議室說：『我們應該廢掉整個專案。』你能相信這有多狂妄嗎？」
EN:"She told me her audacious plan to quit her job and travel the world with just a backpack."
翻譯:「她告訴我她那個大膽的計畫：辭掉工作，只背一個背包去環遊世界。」
在口語中，常與其他詞彙連用以加強語氣，凸顯行為或想法超出常規的程度。 EN: "That's not just bold, that's downright audacious!" 翻譯: 「那不單是大膽，那簡直是膽大包天！」
EN:"It was an audacious move, I'll give him that, but it paid off in the end."
翻譯:「我得說，那是步險棋，但最終成功了。」
在描述令人難以置信的事件時，用作停頓或填充詞，為聽者預留反應時間。 EN: "So he decided to... well, the most audacious thing... he applied for the CEO position with no management experience." 翻譯: 「所以他決定要... 嗯，最膽大妄為的是... 他在毫無管理經驗的情況下申請了執行長的職位。」
EN:"Her idea was—how should I put it—audacious, to say the least."
翻譯:「她的點子嘛—我該怎麼說呢—至少可以說是非常大膽的。」
正式寫作注意：在學術或正式商業文件中，建議使用更中性的同義詞，如 bold、daring 或 presumptuous（帶負面義），以保持客觀嚴謹的語調。
an audacious plan
adj + n
一個大膽的計畫
an audacious move
adj + n
一個大膽的舉動
an audacious claim
adj + n
一個大膽的聲稱
an audacious heist
adj + n
一場大膽的搶劫
an audacious attempt
adj + n
一次大膽的嘗試
audacious behavior
adj + n
大膽無禮的行為
audacious enough to
adj + enough + to-inf
大膽到足以...
×He made an audacious.
✓He made an audacious move.
"Audacious" 是形容詞，不能單獨當作名詞使用。必須修飾一個名詞，或使用其名詞形式 "audacity"。
×Her audacious kindness touched our hearts.
✓Her extraordinary kindness touched our hearts.
"Audacious" 通常帶有「魯莽、放肆、不顧後果」的負面或冒險含義，不適合用來形容純粹正面、無風險的特質（如善良）。應用於需要勇氣、可能招致反對或風險的行為或想法。
×Wearing a red dress to the party was very audacious.
✓Wearing a red dress to the party was very bold/daring.
"Audacious" 的程度比 "bold" 或 "daring" 更強，常暗示某種令人震驚、近乎無禮的放肆或創新。用於穿紅裙這種單純的勇敢行為可能顯得不自然。它更適合用於突破常規、挑戰權威或極高風險的情境。
×She was audacious for her innovative ideas.
✓She was audacious in presenting her innovative ideas.
描述某人因某種具體行為或特質而顯得 "audacious" 時，常用結構是 "audacious in (doing) something"，或用 "for" 接名詞時，名詞應為具體的冒險行為，而非靜態特質。
×odicous / odacious
✓audacious
拼寫錯誤常發生在開頭的 "au-" 被誤寫為 "o-"，或漏掉 "d"。正確發音為 /ɔːˈdeɪ.ʃəs/，重音在第二音節。