1. 為人所討厭的人或物：bet your boots || 必然, 有把握 | betenoire || 為人所討厭的人或物 | bete || 野獸 愚人
bete noire詞典解釋
1. 討厭鬼；眼中釘，肉中刺 If you refer to someone or something as your bete noire, you mean that you have a particular dislike for them or that they annoy you a great deal.
e.g. Our real betenoire is the car boot sale. 我們最煩那些用汽車(chē)后備箱擺攤賣(mài)舊貨的。