unbuttoned
🇺🇸
/ˌʌnˈbʌtnd/
🇬🇧
/ˌʌnˈbʌtnd/
adjective
R
not formal or strict
She wore an unbuttoned shirt, giving her a casual look.
她穿著一件未扣鈕扣的襯衫，給人一種隨意的感覺。
translation
非正式的