POSH Meaning of POSH in English posh BrE AmE pɒʃ AmE pɑːʃ —In British English there is also a jocular form pəʊʃ▷ poshly ˈpɒʃ li AmE ˈpɑːʃ-▷ poshness ˈpɒʃ nəs -nɪs AmE \ ˈpɑːʃ- Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012