理由の原理 りゆうのげんり Meanings Expression, Noun principle of sufficient reason See also: 充足理由の原理 (じゅうそくりゆうのげんり). Kanji 理 reason. Read as リ. 由 reason. Read as ユウ. 原 original. Read as ゲン. Words containing 理由の原理 充足理由の原理 (じゅうそくりゆうのげんり) principle of sufficient reason Word lists Philosophy Jinuma: Japanese Dictionary · Word lists