OSTENTATIOUS Meaning of OSTENTATIOUS in English ostentatious BrE AmE ˌɒst en ˈteɪʃ əs ◂ - ə n- AmE \ ˌɑːst-▷ ostentatious|ly li▷ ostentatious|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012