Pronunciation: [mˈə͡ʊst fˈɔːθ] (IPA)
Correct spelling for the English word "most forth" is [mˈə͡ʊst fˈɔːθ], [mˈəʊst fˈɔːθ], [m_ˈəʊ_s_t f_ˈɔː_θ] (IPA phonetic alphabet).
Correct spelling for most forth