蓋がい然ぜん率りつがいぜんりつMeanings1nounprobability; likelihoodobsolete termObsolete term for probability; replaced by 確率 (かくりつ) in modern Japanese. Found in older texts or historical contexts.See also: 確率蓋がい然ぜん率りつという言こと葉ばは、昔むかし