80%RatingSave Gender Masculine Usage Japanese Scripts 正樹, 政樹, 真樹, etc.(Japanese Kanji) まさき(Japanese Hiragana) Pronounced Pron. /mä.sä.kʲi/ [key·simplify] Meaning & History From Japanese 正 (masa) meaning "right, proper" and 樹 (ki) meaning "tree", as well as other combinations of kanji having the same reading.