偶発的

(1)having no cause or apparent cause; "a causeless miracle"; "fortuitous encounters--strange accidents of fortune"; "we cannot regard artistic invention as...uncaused and unrelated to the times"

(2)原因がない、または明白な原因がないさま

(3)without or seeming to be without plan or method; offhand; "a casual remark"; "information collected by casual methods and in their spare time"

(4)計画や方法がない、またはないように見えるさま

(5)何気ない

(6)occurring or appearing or singled out by chance; "seek help from casual passers-by"; "a casual meeting"; "a chance occurrence"

(7)偶然起こるか、現れることまたは特別に扱われる

(8)happening by chance or unexpectedly or unintentionally ; "with an inadvertent gesture she swept the vase off the table"; "accidental poisoning"; "an accidental shooting"

(9)偶然に、予期せずにまたは意図せずに起きる

(1)