Pronunciation: [d͡ʒˌɛɹəntˈə͡ʊd͡ʒəs] (IPA)
Correct spelling for the English word "gerontogeous" is [d͡ʒˌɛɹəntˈə͡ʊd͡ʒəs], [dʒˌɛɹəntˈəʊdʒəs], [dʒ_ˌɛ_ɹ_ə_n_t_ˈəʊ_dʒ_ə_s] (IPA phonetic alphabet).