ONE-ON-ONE Meaning of ONE-ON-ONE in English one-on-one BrE AmE ˌwʌn ɒn ˈwʌn § ˌwɒn•ˈwɒn AmE -ɑːn- -ɔːn- Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012