Pronunciation: [sˈɪŋkjuːmə] (IPA)
Correct spelling for the English word "Sinkumar" is [sˈɪŋkjuːmə], [sˈɪŋkjuːmə], [s_ˈɪ_ŋ_k_j_uː_m_ə] (IPA phonetic alphabet).