NONCHALANCE Meaning of NONCHALANCE in English nonchalance BrE AmE ˈnɒn t ʃ ə l ən t s AmE \ ˌnɑːn ʃə ˈlɑːn t s ˈ••• (*) Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012