偶発

(1)happen, occur, or be the case in the course of events or by chance; "It happens that today is my birthday"; "These things befell" (Santayana)

(2)成り行きで、または偶然に、生じる、発生する、あるいはそうなる

(3)chance to be or do something, without intention or causation; "I happen to have just what you need!"

(4)意図または原因なく何かである、あるいは何かをする機会

(1)