UNBUTTON Meaning of UNBUTTON in English unbutton BrE AmE ˌʌn ˈbʌt ə n ◂ ⇨ˌʌm- ▷ unbutton|ed d▷ unbutton|ing ‿ɪŋ▷ unbutton|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012