Unusually for a Westerner who has been living long-term in Japan, he's lost none of his youthful enthusiasm and manifests the same manic glee he once did as a jazz-mad, art-crazed undergraduate.
She turned what might have been a disadvantage into an advantage by balancing her youthful enthusiasm with education and expertise.
He still has very youthful enthusiasms, and he's as slim and fit as he was 20 years ago.
The Dancers, singers and musicians, all in authentic costumes, perform with their youthful enthusiasm.
It requires the faithful pursuit of youthful enthusiasm and down-to-earth efforts, a persistent climbing.