楽天主義 らくてんしゅぎ Meanings Noun optimism Kanji 楽 ease. Read as ラク. 天 heaven. Read as テン. 主 main. Read as シュ. 義 justice. Read as ギ. Words containing 楽天主義 楽天主義者 (らくてんしゅぎしゃ) optimist Jinuma: Japanese Dictionary · Word lists