IDIOMATIC Meaning of IDIOMATIC in English idiomatic BrE AmE ˌɪd i‿ə ˈmæt ɪk ◂ -i əʊ- AmE \ -ˈmæt̬-▷ idiomatic|ally ə l‿i Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012