unbuttons
v. 解開(紐扣)( unbutton的第三人稱單數 ); 開啟; 表露; 吐露
If you unbutton an item of clothing, you undo the buttons fastening it.
She had begun to unbutton her blouse.
她開始解襯衣釦子。
...his unbuttoned blue coat.
他沒有扣上紐扣的藍色外套