Pronunciation: [pˈə͡ʊstkɑːɡ] (IPA)
Correct spelling for the English word "POSTCARG" is [pˈə͡ʊstkɑːɡ], [pˈəʊstkɑːɡ], [p_ˈəʊ_s_t_k_ɑː_ɡ] (IPA phonetic alphabet).