Pronunciation: [ɡˌa͡ɪnɪθjˈuːzɪə] (IPA)
Correct spelling for the English word "gynethusia" is [ɡˌa͡ɪnɪθjˈuːzɪə], [ɡˌaɪnɪθjˈuːzɪə], [ɡ_ˌaɪ_n_ɪ_θ_j_ˈuː_z_ɪ__ə] (IPA phonetic alphabet).
Correct spelling for gynethusia