Pronunciation: [ɪz dˌa͡ʊn mˈa͡ʊθ] (IPA)
Correct spelling for the English word "is down mouth" is [ɪz dˌa͡ʊn mˈa͡ʊθ], [ɪz dˌaʊn mˈaʊθ], [ɪ_z d_ˌaʊ_n m_ˈaʊ_θ] (IPA phonetic alphabet).
Correct spelling for is down mouth