1. lacking intelligence or common sense; stupid
缺乏智力或常識的；愚蠢的
It was a brainless mistake that could have been easily avoided.
那是一個愚蠢的錯誤，本來可以輕易避免的。
Don't listen to his brainless advice.
別聽他那沒腦子的建議。
Brainless Meaning（定義、用法、例句與發音）
brainless
adjective
快速理解
What does "Brainless" mean?What are 2-3 core uses of "Brainless"?
形容人或行為缺乏思考、智慧或判斷力。
- 1
字面意義
EN: lacking intelligence or common sense
翻譯: 缺乏智力或常識
- 2
行為表現
EN: acting without thinking or using judgment
翻譯: 行事不經思考或缺乏判斷
- 3
輕蔑形容
EN: used to describe a stupid or foolish person or action
翻譯: 用於形容愚蠢的人或行為
小提醒：注意：此詞帶有強烈貶義，多用於批評，正式場合或禮貌交談中應避免使用。
發音（How to Pronounce "Brainless" in English）
How to pronounce "Brainless" in English?"Brainless" US vs UK pronunciation
點擊下方的 US / UK 按鈕可播放發音。
Real-life Examples of "Brainless" from YouTube Videos
Take "the Other" to lunch | Elizabeth Lesser
TED
“She thought my side beat up on her side way more often -- that we called them brainless, gun-toting racists, And we both marveled at the labels that fit none of the people we actually know.”
(1 out of 3)
Definitions（定義）
What are the definitions of "Brainless"?How does "Brainless" change by context?
2. requiring no thought or intelligence; mindless
不需要思考或智力的；無需動腦的
After a long day, she just wanted to watch some brainless television.
漫長的一天過後，她只想看些不用動腦的電視節目。
The job involved hours of brainless data entry.
這份工作包含數小時無需動腦的資料輸入。
3. used to describe a creature that literally has no brain
用於描述字面上沒有大腦的生物
Jellyfish are essentially brainless creatures.
水母基本上是沒有大腦的生物。
The scientist studied the behavior of brainless organisms.
這位科學家研究了無腦生物的行為。
Grammar & Patterns（句型）
What are common sentence patterns for "Brainless"?How to make natural sentences with "Brainless"?
| Pattern | Meaning | Example |
|---|---|---|
| brainless + noun | 愚蠢的... | He made a brainless mistake that cost the company millions. (他犯了一個愚蠢的錯誤，讓公司損失了數百萬。) |
| be + brainless | 是愚蠢的 | The villain's plan was completely brainless. (那個反派的計畫完全是愚蠢的。) |
| It is brainless to + V | 做...是愚蠢的 | It is brainless to ignore such clear warnings. (無視如此明確的警告是愚蠢的。) |
| a brainless + act/decision/comment | 一個愚蠢的行為/決定/評論 | Her brainless comment offended everyone in the room. (她愚蠢的評論冒犯了房間裡的每一個人。) |
用法說明
How is "Brainless" different from similar structures?What usage mistakes are common with "Brainless"?
brainless doing vs brainless to do
- brainless doing 通常用於描述一個持續進行的、或作為一種特質或習慣的無腦行為。
- brainless to do 則常用於評論某個具體的、一次性的決定或行動是無腦的，特別是在「It is/was brainless to...」的結構中。
- 在口語中，直接說「That was brainless!」來評論已發生的事也很常見，不一定需要完整的「to do」結構。 EN: It was brainless driving in such a heavy storm. 翻譯: 在這麼大的暴風雨中開車真是沒腦子。
EN:It was brainless to drive in such a heavy storm.
翻譯:在這麼大的暴風雨中開車，這個決定很無腦。
總結建議
一般來說，評論具體的單一決定或行動時，使用「brainless to do」的結構更為自然精準。
易混淆對比
What is the difference between "Brainless" and similar words?How to choose "Brainless" vs alternatives?
brainless vs stupid
「brainless」強調缺乏思考或判斷能力，常指行為不經大腦；「stupid」則更廣泛地指智力低下或愚笨。
brainless vs mindless
「brainless」指缺乏智力或思考；「mindless」則強調無意識、機械式或不需要動腦的活動。
brainless vs foolish
「brainless」強調缺乏基本思考能力；「foolish」則更側重於判斷力差、不明智或缺乏常識。
口語用法
How is "Brainless" used in spoken English?What is the spoken vs formal difference for "Brainless"?
引述
用於引述他人對某事物或行為的負面評價，語氣較為直接。 EN: He called the plan "brainless" and refused to support it. 翻譯: 他稱這個計劃「沒腦子」，並拒絕支持。
EN:She just muttered "brainless idea" under her breath and walked away.
翻譯:她只是低聲咕噥了一句「蠢主意」，然後就走開了。
語氣強調
在口語中加強批評或嘲諷的語氣，常與其他詞語連用。 EN: That was a completely brainless move on their part. 翻譯: 他們那一步棋走得真是徹頭徹尾地沒腦筋。
EN:Don't be so brainless! Think before you act.
翻譯:別這麼沒腦子！行動前先想一想。
停頓填充
作為停頓時的填充詞，用於表達輕蔑或不耐煩，通常單獨使用或與感嘆詞結合。 EN: Brainless! I can't believe you forgot the keys again. 翻譯: 真沒腦子！我真不敢相信你又忘了帶鑰匙。
EN:Oh, brainless. Now I see what went wrong.
翻譯:唉，真蠢。現在我明白哪裡出錯了。
正式書寫注意：在正式或學術寫作中，應避免使用 "brainless" 這類帶有強烈口語色彩和人身攻擊意味的詞彙。建議改用更中性的詞語，如 "unwise"、"ill-considered" 或 "lacking in thought" 來表達類似概念。
常見短語
What common collocations use "Brainless"?What fixed phrases with "Brainless" should I remember?
brainless idiot
brainless + noun (person)
愚蠢的白痴；沒腦子的笨蛋
brainless task
brainless + noun (activity)
無需動腦的任務；機械性的工作
brainless entertainment
brainless + noun (abstract)
無需思考的娛樂；純粹消遣
absolutely brainless
adverb + brainless
極度愚蠢的；完全沒腦子的
brainless violence
brainless + noun (concept)
無意義的暴力；盲目的暴力行為
brainless remark
brainless + noun (utterance)
不經大腦的言論；愚蠢的發言
常見錯誤
What are common mistakes with "Brainless"?Which "Brainless" sentences look correct but are wrong?
×He is brainless to solve this problem.
✓He is too brainless to solve this problem.
在表示「太...以至於不能...」時，通常需要在形容詞前加上 'too' 來構成 'too + adjective + to + verb' 的結構。單獨使用 'brainless' 無法正確表達這種因果關係。
×It was a brainless idea.
✓It was a brainless idea.
此處錯誤在於中文直譯思維。雖然 'brainless' 字面意思是「沒腦的」，但在英文中它主要用於形容人或其行為、決定極度愚蠢、缺乏思考，而非直接描述「想法」本身。雖然 'brainless idea' 在語法上可接受，但更地道的說法是 'a stupid/senseless idea' 或形容人 'It was brainless of him to suggest that.'。學習者常誤用其修飾對象。
×She is brainless than her brother.
✓She is more brainless than her brother.
'Brainless' 是雙音節形容詞，其比較級形式為 'more brainless'，而非在字尾直接加 '-er'。這是學習者對於形容詞比較級構成規則的常見錯誤。
×I feel brainless when I can't answer the question.
✓I feel stupid/foolish when I can't answer the question.
'Brainless' 是一個語氣非常強烈、帶有侮辱性的詞彙，通常用於直接批評他人或事物本質上就缺乏智力或常識，而非描述自己一時的尷尬或能力不足的感覺。描述自己暫時的窘境時，應使用 'stupid', 'foolish', 或 'embarrassed' 等詞。
×This is a brainless work.
✓This is brainless work. / This is a brainless task.
'Work' 作為「工作」時是不可數名詞，前面不能加不定冠詞 'a'。如果一定要用可數形式，可以改用 'task', 'job', 或 'activity'。此外，'brainless' 更常修飾需要智力的活動或行為，暗示其簡單或單調到不需要動腦。
詞形變化
What are the word forms of "Brainless"?What are tense/participle forms of "Brainless"?