unbuttonedEnglish → ChineseOxford English–Chineseunbuttoned /BrE ʌnˈbʌt(ə)nd , AmE ˌənˈbətnd / adjective 1 (unfastened) 纽扣解开的; an unbuttoned shirt 敞开的衬衫 2 informal (relaxed) 洒脱的 ‹attitude›; (uninhibited) 无拘束的 ‹behaviour, performance›