二に重じゅう関かん節せつ

noun

double-jointed

Describes a person whose joints are unusually flexible, allowing them to bend further than normal. Often used in medical or everyday contexts.

• 彼かの女じょは二に重じゅう関かん節せつで、指ゆびが普ふ通つうよりずっと反そる。

  She is double-jointed, and her fingers bend back much further than normal.

• 二に重じゅう関かん節せつの人ひとは、関かん節せつが外はずれやすいことがある。

  People who are double-jointed may be prone to dislocating their joints.