万まん年ねん青せい年ねん

noun

man of perennial youth; man who never loses his youthful vigor

Describes a man who remains youthful in spirit and energy regardless of age. Often used in a positive, admiring sense.

• 彼かれは80歳さいだが、まるで万まん年ねん青せい年ねんのように元げん気きだ。

  He is 80 years old, but he is as energetic as a man of perennial youth.