若々しい

youthful, young-looking, full of youthful energy

若 young + 々 pluralizes or indicates repetition + しい having the quality of; -ish
adjective · present tense Rare #44,934
youthful, young-looking, full of youthful energy Describes someone or something that looks or feels young, often despite age.
JA: 母はいつも若々しい。
EN: My mother always looks youthful.

若々しい

Youthful

— マレーナ (2000)

彼は年をとっていてもまだ若々しい。

Even though he is old, he still looks young.

彼女は相変わらず若々しい。

She still looks as youthful as ever.