unbutton
verb [ T ] uk/ʌnˈbʌt.ən/ us/ʌnˈbʌt̬.ən/
解开…的纽扣
to unfasten the buttons on something such as a shirt
He unbuttoned his jacket and sat back comfortably in his chair. 他解开上衣扣子，舒服地靠在椅子上。
His shirt was unbuttoned to show off a gold medallion. 他的衬衫扣子解开，为的是炫耀一个金色的圆形大奖章。
- More examples
- He took off his tie and unbuttoned his collar.
- I unbuttoned all the buttons on my cardigan.
- Her coat was unbuttoned, even though it was cold.
- He wears Italian designer shirts, unbuttoned to the navel.