Pronunciation: [t͡ʃˈa͡ɪldsɛks] (IPA)
Correct spelling for the English word "childsex" is [t͡ʃˈa͡ɪldsɛks], [tʃˈaɪldsɛks], [tʃ_ˈaɪ_l_d_s_ɛ_k_s] (IPA phonetic alphabet).