Pronunciation: [ˌɛspˌiːdˈiːdˌiːdˈiː] (IPA)
Correct spelling for the English word "SPDDD" is [ˌɛspˌiːdˈiːdˌiːdˈiː], [ˌɛspˌiːdˈiːdˌiːdˈiː], [ˌɛ_s_p_ˌiː_d_ˈiː_d_ˌiː_d_ˈiː] (IPA phonetic alphabet).
Correct spelling for SPDDD