一人天下 ひとりてんか Also written ひとりでんか, 独り天下 Meanings Noun being the sole master of the situation; reigning supreme; standing unchallenged Kanji 一 one. Read as ひと. 人 person. Read as ひと. 天 heaven. Read as テン. 下 down. Read as カ. Jinuma: Japanese Dictionary · Word lists