蓋然 がいぜん Meanings Noun probability Kanji 蓋 lid. Read as ガイ. 然 -ly. Read as ゼン. Words containing 蓋然 蓋然性 (がいぜんせい) probability 蓋然的 (がいぜんてき) probable 蓋然率 (がいぜんりつ) probability Jinuma: Japanese Dictionary · Word lists