NONCHALANT Meaning of NONCHALANT in English nonchalant BrE AmE ˈnɒn t ʃ ə l ənt AmE \ ˌnɑːn ʃə ˈlɑːnt ◂ ˈ••• ▷ nonchalant|ly li Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012