Pronunciation: [sˈɪdne͡ɪ] (IPA)
Correct spelling for the English word "Sidneigh" is [sˈɪdne͡ɪ], [sˈɪdneɪ], [s_ˈɪ_d_n_eɪ] (IPA phonetic alphabet).
Correct spelling for Sidneigh