Save Gender Masculine Usage Thai Scripts อิทธิศักดิ์(Thai) Pronounced Pron. /ʔit̚˨˩.tʰiʔ˦˥.ˈsak̚˨˩/ [key·simplify] Other Forms FormsIttisak, Ithisak, Itisak, Aitthisak, Aittisak, Aithisak, Aitisak Meaning & History From Thai อิทธิ (itthi) meaning "power, might" and ศักดิ์ (sak) meaning "power".